Error(s) in re-building vignettes:
--- re-building ‘Exposure_Response_Example.Rmd’ using rmarkdown
Building exprespmodel ... done.
Fontconfig warning: "/Library/Frameworks/R.framework/Resources/fontconfig/fonts/fonts.conf", line 86: unknown element "blank"
Picking joint bandwidth of 0.015
Picking joint bandwidth of 0.015
Picking joint bandwidth of 0.0647
Picking joint bandwidth of 0.049
Picking joint bandwidth of 0.0482
Picking joint bandwidth of 0.065
Warning in bind_rows_(x, .id) :
  binding factor and character vector, coercing into character vector
Warning in bind_rows_(x, .id) :
  binding character and factor vector, coercing into character vector
Warning in bind_rows_(x, .id) :
  binding factor and character vector, coercing into character vector
Warning in bind_rows_(x, .id) :
  binding character and factor vector, coercing into character vector
Scale for 'x' is already present. Adding another scale for 'x', which will
replace the existing scale.
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 'Exposure_Response_Example.Rmd' failed with diagnostics:
pandoc document conversion failed with error 6
--- failed re-building ‘Exposure_Response_Example.Rmd’

--- re-building ‘Introduction_to_coveffectsplot.Rmd’ using rmarkdown
Fontconfig warning: "/Library/Frameworks/R.framework/Resources/fontconfig/fonts/fonts.conf", line 86: unknown element "blank"
Picking joint bandwidth of 0.0273
Picking joint bandwidth of 0.0326
Warning: Removed 57 rows containing non-finite values (stat_density).
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 'Introduction_to_coveffectsplot.Rmd' failed with diagnostics:
pandoc document conversion failed with error 6
--- failed re-building ‘Introduction_to_coveffectsplot.Rmd’

--- re-building ‘Pediatric_Cov_Sim.Rmd’ using rmarkdown
Building pedpkmodelcov ... done.
Warning: Transformation introduced infinite values in continuous y-axis
Fontconfig warning: "/Library/Frameworks/R.framework/Resources/fontconfig/fonts/fonts.conf", line 86: unknown element "blank"
Picking joint bandwidth of 0.0339
Picking joint bandwidth of 0.0167
Dropping non-numeric columns: 
  SEXLABEL
Warning in table1::eqcut(AGE, 2, f) :
  Because of duplicate values, it's not possible to form 2 equal-sized groups. Largest group size: 65000; smallest group size: 62400
Warning in table1::eqcut(AGE, 2, f) :
  Because of duplicate values, it's not possible to form 2 equal-sized groups. Largest group size: 65000; smallest group size: 62400
Warning in table1::eqcut(AGE, 2, f) :
  Because of duplicate values, it's not possible to form 2 equal-sized groups. Largest group size: 65000; smallest group size: 62400
Warning in table1::eqcut(nca.summaries$WT, 3, varlabel = "Weight") :
  Because of duplicate values, it's not possible to form 3 equal-sized groups. Largest group size: 3268; smallest group size: 3266
Warning in table1::eqcut(nca.summaries$AGE, 4, varlabel = "Age") :
  Because of duplicate values, it's not possible to form 4 equal-sized groups. Largest group size: 2600; smallest group size: 2400
Warning: attributes are not identical across measure variables;
they will be dropped
Picking joint bandwidth of 0.0241
Picking joint bandwidth of 0.0289
Picking joint bandwidth of 0.013
Picking joint bandwidth of 0.0155
Picking joint bandwidth of 0.0108
Picking joint bandwidth of 0.0129
Picking joint bandwidth of 0.0207
Picking joint bandwidth of 0.0249
Picking joint bandwidth of 0.0276
Picking joint bandwidth of 0.0332
Warning in bind_rows_(x, .id) :
  binding factor and character vector, coercing into character vector
Warning in bind_rows_(x, .id) :
  binding character and factor vector, coercing into character vector
Warning in bind_rows_(x, .id) :
  binding factor and character vector, coercing into character vector
Warning in bind_rows_(x, .id) :
  binding character and factor vector, coercing into character vector
Scale for 'x' is already present. Adding another scale for 'x', which will
replace the existing scale.
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 'Pediatric_Cov_Sim.Rmd' failed with diagnostics:
pandoc document conversion failed with error 6
--- failed re-building ‘Pediatric_Cov_Sim.Rmd’

SUMMARY: processing the following files failed:
  ‘Exposure_Response_Example.Rmd’ ‘Introduction_to_coveffectsplot.Rmd’
  ‘Pediatric_Cov_Sim.Rmd’

Error: Vignette re-building failed.
Execution halted