Error(s) in re-building vignettes:
  ...
--- re-building ‘boxjenkins.Rmd’ using rmarkdown
Warning in sqrt(diag(as.matrix(Nmat[, , t + 1]))) : NaNs produced
Warning in sqrt(diag(as.matrix(Nmat[, , t + 1]))) : NaNs produced
Warning in sqrt(diag(as.matrix(Nmat[, , t + 1]))) : NaNs produced
pandoc-citeproc: Error in $: Incompatible API versions: encoded with [1,20] but attempted to decode with [1,17,5,4].
CallStack (from HasCallStack):
  error, called at ./Text/Pandoc/JSON.hs:111:48 in pandoc-types-1.17.5.4-5tHZ3B61A58JaKOMxwGQR4:Text.Pandoc.JSON
Error running filter /usr/bin/pandoc-citeproc:
Filter returned error status 1
Error: processing vignette 'boxjenkins.Rmd' failed with diagnostics:
pandoc document conversion failed with error 83
--- failed re-building ‘boxjenkins.Rmd’

--- re-building ‘dictionary.Rmd’ using rmarkdown
pandoc-citeproc: Error in $: Incompatible API versions: encoded with [1,20] but attempted to decode with [1,17,5,4].
CallStack (from HasCallStack):
  error, called at ./Text/Pandoc/JSON.hs:111:48 in pandoc-types-1.17.5.4-5tHZ3B61A58JaKOMxwGQR4:Text.Pandoc.JSON
Error running filter /usr/bin/pandoc-citeproc:
Filter returned error status 1
Error: processing vignette 'dictionary.Rmd' failed with diagnostics:
pandoc document conversion failed with error 83
--- failed re-building ‘dictionary.Rmd’

--- re-building ‘intro.Rmd’ using rmarkdown
pandoc-citeproc: Error in $: Incompatible API versions: encoded with [1,20] but attempted to decode with [1,17,5,4].
CallStack (from HasCallStack):
  error, called at ./Text/Pandoc/JSON.hs:111:48 in pandoc-types-1.17.5.4-5tHZ3B61A58JaKOMxwGQR4:Text.Pandoc.JSON
Error running filter /usr/bin/pandoc-citeproc:
Filter returned error status 1
Error: processing vignette 'intro.Rmd' failed with diagnostics:
pandoc document conversion failed with error 83
--- failed re-building ‘intro.Rmd’

--- re-building ‘seatbelt.Rmd’ using rmarkdown
Warning in StateSpaceFit(y = y, local_level_ind = TRUE, BSM_vec = BSM_vec,  :
  Number of initial parameters is less than the required amount of parameters (3), recycling the initial parameters the required amount of times.
Warning in sqrt(diag(as.matrix(Nmat[, , t + 1]))) : NaNs produced
Warning in sqrt(diag(as.matrix(Nmat[, , t + 1]))) : NaNs produced
Warning in StateSpaceFit(y = y, H_format = H_format, local_level_ind = TRUE,  :
  Number of initial parameters is less than the required amount of parameters (6), recycling the initial parameters the required amount of times.
Warning in sqrt(diag(as.matrix(Nmat[, , t + 1]))) : NaNs produced
pandoc-citeproc: Error in $: Incompatible API versions: encoded with [1,20] but attempted to decode with [1,17,5,4].
CallStack (from HasCallStack):
  error, called at ./Text/Pandoc/JSON.hs:111:48 in pandoc-types-1.17.5.4-5tHZ3B61A58JaKOMxwGQR4:Text.Pandoc.JSON
Error running filter /usr/bin/pandoc-citeproc:
Filter returned error status 1
Error: processing vignette 'seatbelt.Rmd' failed with diagnostics:
pandoc document conversion failed with error 83
--- failed re-building ‘seatbelt.Rmd’

--- re-building ‘selfspec.Rmd’ using rmarkdown
pandoc-citeproc: Error in $: Incompatible API versions: encoded with [1,20] but attempted to decode with [1,17,5,4].
CallStack (from HasCallStack):
  error, called at ./Text/Pandoc/JSON.hs:111:48 in pandoc-types-1.17.5.4-5tHZ3B61A58JaKOMxwGQR4:Text.Pandoc.JSON
Error running filter /usr/bin/pandoc-citeproc:
Filter returned error status 1
Error: processing vignette 'selfspec.Rmd' failed with diagnostics:
pandoc document conversion failed with error 83
--- failed re-building ‘selfspec.Rmd’

SUMMARY: processing the following files failed:
  ‘boxjenkins.Rmd’ ‘dictionary.Rmd’ ‘intro.Rmd’ ‘seatbelt.Rmd’
  ‘selfspec.Rmd’

Error: Vignette re-building failed.
Execution halted