Error(s) in re-building vignettes:
--- re-building 'deduplication.md' using mdweave_to_html
Evaluating code in block '<unlabeled code block>'.
Evaluating code in block '<unlabeled code block>'.
Evaluating code in block '<unlabeled code block>'.
Evaluating code in block '<unlabeled code block>'.
Evaluating code in block '<unlabeled code block>'.
Evaluating code in block '<unlabeled code block>'.
Evaluating code in block '<unlabeled code block>'.
Evaluating code in inline block '<unlabeled inline block>'.
Evaluating code in inline block '<unlabeled inline block>'.
Evaluating code in inline block '<unlabeled inline block>'.
Evaluating code in block '<unlabeled code block>'.
Evaluating code in block '<unlabeled code block>'.
Evaluating code in block '<unlabeled code block>'.
Evaluating code in block '<unlabeled code block>'.
Evaluating code in block '<unlabeled code block>'.
Evaluating code in block '<unlabeled code block>'.
Error: processing vignette 'deduplication.md' failed with diagnostics:
Running '' had status 127; this generally means that '' could not be found. Make sure '' in on the path.
--- failed re-building 'deduplication.md'

--- re-building 'introduction.md' using mdweave_to_html
Evaluating code in block '<unlabeled code block>'.
Evaluating code in block '<unlabeled code block>'.
Evaluating code in block '<unlabeled code block>'.
Evaluating code in block '<unlabeled code block>'.
Evaluating code in block '<unlabeled code block>'.
Evaluating code in block '<unlabeled code block>'.
Evaluating code in block '<unlabeled code block>'.
Evaluating code in block '<unlabeled code block>'.
Evaluating code in block '<unlabeled code block>'.
Evaluating code in block '<unlabeled code block>'.
Evaluating code in block '<unlabeled code block>'.
Evaluating code in block '<unlabeled code block>'.
Evaluating code in block '<unlabeled code block>'.
Evaluating code in block '<unlabeled code block>'.
Error: processing vignette 'introduction.md' failed with diagnostics:
Running '' had status 127; this generally means that '' could not be found. Make sure '' in on the path.
--- failed re-building 'introduction.md'

--- re-building 'record_linkage_using_machine_learning.md' using mdweave_to_html
Evaluating code in block '<unlabeled code block>'.
Evaluating code in block '<unlabeled code block>'.
Evaluating code in block '<unlabeled code block>'.
Evaluating code in block '<unlabeled code block>'.
Evaluating code in block '<unlabeled code block>'.
Evaluating code in block '<unlabeled code block>'.
Evaluating code in block '<unlabeled code block>'.
Warning: glm.fit: fitted probabilities numerically 0 or 1 occurred
Evaluating code in block '<unlabeled code block>'.
Evaluating code in block '<unlabeled code block>'.
Error: processing vignette 'record_linkage_using_machine_learning.md' failed with diagnostics:
Running '' had status 127; this generally means that '' could not be found. Make sure '' in on the path.
--- failed re-building 'record_linkage_using_machine_learning.md'

--- re-building 'using_a_cluster_for_record_linkage.md' using mdweave_to_html
Evaluating code in block '<unlabeled code block>'.
Evaluating code in block '<unlabeled code block>'.
Evaluating code in block '<unlabeled code block>'.
Evaluating code in block '<unlabeled code block>'.
Evaluating code in block '<unlabeled code block>'.
Evaluating code in block '<unlabeled code block>'.
Evaluating code in block '<unlabeled code block>'.
Evaluating code in block '<unlabeled code block>'.
Evaluating code in block '<unlabeled code block>'.
Evaluating code in block '<unlabeled code block>'.
Evaluating code in block '<unlabeled code block>'.
Evaluating code in block '<unlabeled code block>'.
Evaluating code in block '<unlabeled code block>'.
Evaluating code in block '<unlabeled code block>'.
Error: processing vignette 'using_a_cluster_for_record_linkage.md' failed with diagnostics:
Running '' had status 127; this generally means that '' could not be found. Make sure '' in on the path.
--- failed re-building 'using_a_cluster_for_record_linkage.md'

SUMMARY: processing the following files failed:
  'deduplication.md' 'introduction.md'
  'record_linkage_using_machine_learning.md'
  'using_a_cluster_for_record_linkage.md'

Error: Vignette re-building failed.
Execution halted