Error(s) in re-building vignettes:
--- re-building ‘ordinal.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: ergm
Loading required package: network

'network' 1.17.1 (2021-06-12), part of the Statnet Project
* 'news(package="network")' for changes since last version
* 'citation("network")' for citation information
* 'https://statnet.org' for help, support, and other information


'ergm' 4.0.1 (2021-06-20), part of the Statnet Project
* 'news(package="ergm")' for changes since last version
* 'citation("ergm")' for citation information
* 'https://statnet.org' for help, support, and other information

'ergm' 4 is a major update that introduces some backwards-incompatible
changes. Please type 'news(package="ergm")' for a list of major
changes.


'ergm.rank' 4.0.0 (2021-06-20), part of the Statnet Project
* 'news(package="ergm.rank")' for changes since last version
* 'citation("ergm.rank")' for citation information
* 'https://statnet.org' for help, support, and other information

Best valid proposal 'AlterSwap' cannot take into account hint(s) 'sparse'.
Starting contrastive divergence estimation via CD-MCMLE:
Iteration 1 of at most 60:
Convergence test P-value:3.5e-85
The log-likelihood improved by 1.03.
Iteration 2 of at most 60:
Convergence test P-value:2.6e-11
The log-likelihood improved by 0.07323.
Iteration 3 of at most 60:
Convergence test P-value:6e-02
Convergence detected. Stopping.
The log-likelihood improved by 0.009888.
Finished CD.
Starting Monte Carlo maximum likelihood estimation (MCMLE):
Iteration 1 of at most 60:
Optimizing with step length 1.0000.
The log-likelihood improved by 0.2466.
Estimating equations are not within tolerance region.
Iteration 2 of at most 60:
Optimizing with step length 1.0000.
The log-likelihood improved by 0.0283.
Convergence test p-value: 0.4415. Not converged with 99% confidence; increasing sample size.
Iteration 3 of at most 60:
Optimizing with step length 1.0000.
The log-likelihood improved by 0.0032.
Convergence test p-value: 0.0644. Not converged with 99% confidence; increasing sample size.
Iteration 4 of at most 60:
Optimizing with step length 1.0000.
The log-likelihood improved by 0.0110.
Convergence test p-value: 0.0232. Not converged with 99% confidence; increasing sample size.
Iteration 5 of at most 60:
Optimizing with step length 1.0000.
The log-likelihood improved by 0.0165.
Convergence test p-value: 0.0032. Converged with 99% confidence.
Finished MCMLE.
This model was fit using MCMC.  To examine model diagnostics and check
for degeneracy, use the mcmc.diagnostics() function.
Log-likelihood was not estimated for this fit. To get deviances, AIC, and/or BIC, use ‘*fit* <-logLik(*fit*, add=TRUE)’ to add it to the object or rerun this function with eval.loglik=TRUE.
Quitting from lines 361-362 (ordinal.Rmd) 
Error: processing vignette 'ordinal.Rmd' failed with diagnostics:
polygon edge not found
--- failed re-building ‘ordinal.Rmd’

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

Error: Vignette re-building failed.
Execution halted