Error(s) in re-building vignettes:
  ...
--- re-building ‘glmdisc.Rmd’ using rmarkdown
Iteration 1 ended with a performance of aic = -Inf
Iteration 2 ended with a performance of aic = -113.746825065015
Iteration 3 ended with a performance of aic = -130.857746372588
Iteration 4 ended with a performance of aic = -121.926365654941
Iteration 5 ended with a performance of aic = -124.953605851288
Iteration 6 ended with a performance of aic = -146.686577946509
Iteration 7 ended with a performance of aic = -129.693344664257
Iteration 8 ended with a performance of aic = -122.705696245304
Iteration 9 ended with a performance of aic = -141.016712552101
Iteration 10 ended with a performance of aic = -138.041449948518
Iteration 11 ended with a performance of aic = -133.655579604331
Iteration 12 ended with a performance of aic = -132.103599786286
Iteration 13 ended with a performance of aic = -117.543028657489
Iteration 14 ended with a performance of aic = -119.385314968131
Iteration 15 ended with a performance of aic = -123.835875136372
Iteration 16 ended with a performance of aic = -128.885708578663
Iteration 17 ended with a performance of aic = -116.971231898037
Iteration 18 ended with a performance of aic = -139.158365348775
Iteration 19 ended with a performance of aic = -112.162903346709
Iteration 20 ended with a performance of aic = -109.482758516334
Iteration 21 ended with a performance of aic = -126.191126838903
Iteration 22 ended with a performance of aic = -129.474902064726
Iteration 23 ended with a performance of aic = -135.665171567106
Iteration 24 ended with a performance of aic = -131.012730690925
Iteration 25 ended with a performance of aic = -128.741880620818
Iteration 26 ended with a performance of aic = -128.189381960244
Iteration 27 ended with a performance of aic = -130.533101674965
Iteration 28 ended with a performance of aic = -118.989289356253
Iteration 29 ended with a performance of aic = -121.473085299659
Iteration 30 ended with a performance of aic = -135.206245332051
Iteration 31 ended with a performance of aic = -132.702941638431
Iteration 32 ended with a performance of aic = -133.486761079326
Iteration 33 ended with a performance of aic = -121.663601919039
Iteration 34 ended with a performance of aic = -120.77661989663
Iteration 35 ended with a performance of aic = -129.903472284357
Iteration 36 ended with a performance of aic = -135.854096648042
Iteration 37 ended with a performance of aic = -131.516669180393
Iteration 38 ended with a performance of aic = -121.491799136442
Iteration 39 ended with a performance of aic = -135.019272658966
Iteration 40 ended with a performance of aic = -138.797544309495
Iteration 41 ended with a performance of aic = -135.9543230137
Iteration 42 ended with a performance of aic = -139.324424728259
Iteration 43 ended with a performance of aic = -134.346850614505
Iteration 44 ended with a performance of aic = -131.634179936547
Iteration 45 ended with a performance of aic = -134.809675931992
Quitting from lines 298-301 (glmdisc.Rmd) 
Error: processing vignette 'glmdisc.Rmd' failed with diagnostics:
number of items to replace is not a multiple of replacement length
--- failed re-building ‘glmdisc.Rmd’

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

Error: Vignette re-building failed.
Execution halted