Error(s) in re-building vignettes:
--- re-building ‘meme.Rmd’ using rmarkdown
Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
  no font could be found for family "STHeiti"
Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
  no font could be found for family "STHeiti"
Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
  no font could be found for family "STHeiti"
Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
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Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
  no font could be found for family "STHeiti"
Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
  no font could be found for family "STHeiti"
Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
  no font could be found for family "STHeiti"
Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
  no font could be found for family "STHeiti"
Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
  no font could be found for family "STHeiti"
Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
  no font could be found for family "STHeiti"
Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
  no font could be found for family "STHeiti"
Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
  no font could be found for family "STHeiti"
Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
  no font could be found for family "STHeiti"
Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
  no font could be found for family "STHeiti"
Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
  no font could be found for family "STHeiti"
Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
  no font could be found for family "STHeiti"
Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
  no font could be found for family "STHeiti"
Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
  no font could be found for family "STHeiti"
Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
  no font could be found for family "STHeiti"
Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
  no font could be found for family "STHeiti"
Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
  no font could be found for family "STHeiti"
Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
  no font could be found for family "STHeiti"
Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
  no font could be found for family "STHeiti"
Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
  no font could be found for family "STHeiti"
Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
  no font could be found for family "STHeiti"
Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
  no font could be found for family "STHeiti"
Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
  no font could be found for family "STHeiti"
Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
  no font could be found for family "STHeiti"
Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
  no font could be found for family "STHeiti"
Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
  no font could be found for family "STHeiti"
Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
  no font could be found for family "STHeiti"
Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
  no font could be found for family "STHeiti"
Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
  no font could be found for family "STHeiti"
Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
  no font could be found for family "STHeiti"
Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
  no font could be found for family "STHeiti"
Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
  no font could be found for family "STHeiti"
Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
  no font could be found for family "STHeiti"
Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
  no font could be found for family "STHeiti"
Warning in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
  no font could be found for family "STHeiti"
dyld: lazy symbol binding failed: Symbol not found: ____chkstk_darwin
  Referenced from: /usr/local/bin/pandoc (which was built for Mac OS X 10.15)
  Expected in: /usr/lib/libSystem.B.dylib

dyld: Symbol not found: ____chkstk_darwin
  Referenced from: /usr/local/bin/pandoc (which was built for Mac OS X 10.15)
  Expected in: /usr/lib/libSystem.B.dylib

Error: processing vignette 'meme.Rmd' failed with diagnostics:
pandoc document conversion failed with error 6
--- failed re-building ‘meme.Rmd’

SUMMARY: processing the following file failed:
  ‘meme.Rmd’

Error: Vignette re-building failed.
Execution halted