Error(s) in re-building vignettes:
--- re-building ‘Executing_Business_Rules_At_Scale_With_RDrools_using_Drools.Rmd’ using rmarkdown
Loading required package: rJava
Loading required package: Rdroolsjars

Attaching package: 'dplyr'

The following objects are masked from 'package:stats':

    filter, lag

The following objects are masked from 'package:base':

    intersect, setdiff, setequal, union


Attaching package: 'purrr'

The following object is masked from 'package:magrittr':

    set_names

SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.
Warning in if (class(intermediateOutput) == "list") { :
  the condition has length > 1 and only the first element will be used
Warning: filter_() is deprecated. 
Please use filter() instead

The 'programming' vignette or the tidyeval book can help you
to program with filter() : https://tidyeval.tidyverse.org
This warning is displayed once per session.
Warning in if (class(intermediateOutput) == "list") { :
  the condition has length > 1 and only the first element will be used
Warning in if (class(intermediateOutput) == "list") { :
  the condition has length > 1 and only the first element will be used
Warning in if (class(intermediateOutput) == "list") { :
  the condition has length > 1 and only the first element will be used
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 'Executing_Business_Rules_At_Scale_With_RDrools_using_Drools.Rmd' failed with diagnostics:
pandoc document conversion failed with error 6
--- failed re-building ‘Executing_Business_Rules_At_Scale_With_RDrools_using_Drools.Rmd’

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

Error: Vignette re-building failed.
Execution halted