Error(s) in re-building vignettes:
--- re-building ‘aov.Rmd’ using rmarkdown
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  Pandoc (>= 1.12.3) not available. Falling back to R Markdown v1.
--- finished re-building ‘aov.Rmd’

--- re-building ‘betareg.Rmd’ using rmarkdown
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  Pandoc (>= 1.12.3) not available. Falling back to R Markdown v1.
--- finished re-building ‘betareg.Rmd’

--- re-building ‘binomial.Rmd’ using rmarkdown
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  Pandoc (>= 1.12.3) not available. Falling back to R Markdown v1.
--- finished re-building ‘binomial.Rmd’

--- re-building ‘continuous.Rmd’ using rmarkdown
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  Pandoc (>= 1.12.3) not available. Falling back to R Markdown v1.
--- finished re-building ‘continuous.Rmd’

--- re-building ‘count.Rmd’ using rmarkdown
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  Pandoc (>= 1.12.3) not available. Falling back to R Markdown v1.
--- finished re-building ‘count.Rmd’

--- re-building ‘glmer.Rmd’ using rmarkdown
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  Pandoc (>= 1.12.3) not available. Falling back to R Markdown v1.
--- finished re-building ‘glmer.Rmd’

--- re-building ‘jm.Rmd’ using rmarkdown
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  Pandoc (>= 1.12.3) not available. Falling back to R Markdown v1.
--- finished re-building ‘jm.Rmd’

--- re-building ‘lm.Rmd’ using rmarkdown
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  Pandoc (>= 1.12.3) not available. Falling back to R Markdown v1.
--- finished re-building ‘lm.Rmd’

--- re-building ‘mrp.Rmd’ using rmarkdown
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  Pandoc (>= 1.12.3) not available. Falling back to R Markdown v1.
--- finished re-building ‘mrp.Rmd’

--- re-building ‘polr.Rmd’ using rmarkdown
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  Pandoc (>= 1.12.3) not available. Falling back to R Markdown v1.
--- finished re-building ‘polr.Rmd’

--- re-building ‘pooling.Rmd’ using rmarkdown
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  Pandoc (>= 1.12.3) not available. Falling back to R Markdown v1.
--- finished re-building ‘pooling.Rmd’

--- re-building ‘priors.Rmd’ using rmarkdown
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  Pandoc (>= 1.12.3) not available. Falling back to R Markdown v1.
Loading required package: Rcpp
This is rstanarm version 2.21.1
- See https://mc-stan.org/rstanarm/articles/priors for changes to default priors!
- Default priors may change, so it's safest to specify priors, even if equivalent to the defaults.
- For execution on a local, multicore CPU with excess RAM we recommend calling
  options(mc.cores = parallel::detectCores())
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
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Quitting from lines 297-307 (priors.Rmd) 
Error: processing vignette 'priors.Rmd' failed with diagnostics:
polygon edge not found
--- failed re-building ‘priors.Rmd’

--- re-building ‘rstanarm.Rmd’ using rmarkdown
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  Pandoc (>= 1.12.3) not available. Falling back to R Markdown v1.
Loading required package: Rcpp
This is rstanarm version 2.21.1
- See https://mc-stan.org/rstanarm/articles/priors for changes to default priors!
- Default priors may change, so it's safest to specify priors, even if equivalent to the defaults.
- For execution on a local, multicore CPU with excess RAM we recommend calling
  options(mc.cores = parallel::detectCores())
Warning in (function (main = NULL, sub = NULL, xlab = NULL, ylab = NULL,  :
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Warning: Found 1 observation(s) with a pareto_k > 0.7. We recommend calling 'loo' again with argument 'k_threshold = 0.7' in order to calculate the ELPD without the assumption that these observations are negligible. This will refit the model 1 times to compute the ELPDs for the problematic observations directly.

Warning: Found 2 observation(s) with a pareto_k > 0.7. We recommend calling 'loo' again with argument 'k_threshold = 0.7' in order to calculate the ELPD without the assumption that these observations are negligible. This will refit the model 2 times to compute the ELPDs for the problematic observations directly.

Warning in plot.psis_loo(loo_bglm_1, label_points = TRUE) :
  2.4% of Pareto k estimates are Inf/NA/NaN and not plotted.
Warning in axis(side = side, at = at, labels = labels, ...) :
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Warning in text.default(x = c(24L, 30L), y = c(Inf, 0.503657404086149),  :
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Warning in text.default(x = c(24L, 30L), y = c(Inf, 0.503657404086149),  :
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Warning in text.default(x = c(24L, 30L), y = c(Inf, 0.503657404086149),  :
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Warning in text.default(x = c(24L, 30L), y = c(Inf, 0.503657404086149),  :
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Warning in text.default(x = c(24L, 30L), y = c(Inf, 0.503657404086149),  :
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Warning in text.default(x = c(24L, 30L), y = c(Inf, 0.503657404086149),  :
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Warning in plot.psis_loo(loo_bglm_2, label_points = TRUE) :
  2.4% of Pareto k estimates are Inf/NA/NaN and not plotted.
Warning in axis(side = side, at = at, labels = labels, ...) :
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Warning in title(...) : no font could be found for family "Arial"
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Warning in doTryCatch(return(expr), name, parentenv, handler) :
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--- finished re-building ‘rstanarm.Rmd’

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

Error: Vignette re-building failed.
Execution halted