Error(s) in re-building vignettes:
--- re-building 'Comparing_Search_Strategies_with_searchAnalyzeR.Rmd' using rmarkdown

Quitting from Comparing_Search_Strategies_with_searchAnalyzeR.Rmd:130-150 [execute_searches]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
<error/rlang_error>
Error in `ans[[1]]`:
! subscript out of bounds
---
Backtrace:
    ▆
 1. └─searchAnalyzeR::search_pubmed(...)
 2.   └─rentrez::entrez_search(...)
 3.     ├─rentrez:::parse_esearch(parsed, history = use_history)
 4.     └─rentrez:::parse_esearch.XMLInternalDocument(parsed, history = use_history)
 5.       ├─XML::xmlValue(x[["/eSearchResult/Count"]])
 6.       ├─x[["/eSearchResult/Count"]]
 7.       └─XML:::`[[.XMLInternalDocument`(x, "/eSearchResult/Count")
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Error: processing vignette 'Comparing_Search_Strategies_with_searchAnalyzeR.Rmd' failed with diagnostics:
subscript out of bounds
--- failed re-building 'Comparing_Search_Strategies_with_searchAnalyzeR.Rmd'

--- re-building 'Real_PubMed_Search_Analysis_with_searchAnalyzeR.Rmd' using rmarkdown

Quitting from Real_PubMed_Search_Analysis_with_searchAnalyzeR.Rmd:106-117 [execute-search]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
<error/rlang_error>
Error in `ans[[1]]`:
! subscript out of bounds
---
Backtrace:
    ▆
 1. └─searchAnalyzeR::search_pubmed(...)
 2.   └─rentrez::entrez_search(...)
 3.     ├─rentrez:::parse_esearch(parsed, history = use_history)
 4.     └─rentrez:::parse_esearch.XMLInternalDocument(parsed, history = use_history)
 5.       ├─XML::xmlValue(x[["/eSearchResult/Count"]])
 6.       ├─x[["/eSearchResult/Count"]]
 7.       └─XML:::`[[.XMLInternalDocument`(x, "/eSearchResult/Count")
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Error: processing vignette 'Real_PubMed_Search_Analysis_with_searchAnalyzeR.Rmd' failed with diagnostics:
subscript out of bounds
--- failed re-building 'Real_PubMed_Search_Analysis_with_searchAnalyzeR.Rmd'

SUMMARY: processing the following files failed:
  'Comparing_Search_Strategies_with_searchAnalyzeR.Rmd'
  'Real_PubMed_Search_Analysis_with_searchAnalyzeR.Rmd'

Error: Vignette re-building failed.
Execution halted