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After updating to R 4.3.0 (on macOS 13.3.1) I get an error message, when compiling a markdown document:

Error: package or namespace load failed for 'kableExtra':
 .onLoad failed in loadNamespace() for 'kableExtra', details:
  call:!is.null(rmarkdown::metadata$output)&&rmarkdown::metadata$output%in%
  error: 'length = 3' in coercion to 'logical(1)'
Execution halted

Running the individual chunks in R Studio works without error message.

I already re-installed kableExtra with all dependencies.

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  • 5
    According to the R news Calling && or || with LHS or (if evaluated) RHS of length greater than one is now always an error, with a report of the form 'length = 4' in coercion to 'logical(1)' Commented Apr 27, 2023 at 8:16
  • 6
    It is a known issue, you need to install patched version from github: github.com/haozhu233/kableExtra/issues/750 Commented Apr 27, 2023 at 8:19
  • 15
    Your "output" section of the YAML for your document includes 3 entries. Reduce it to one entry and you'll work around the bug in kableExtra. Commented Apr 27, 2023 at 8:20
  • If installing dev patch does not work, then remove pdf from YAML output: html_document: default pdf_document: default Commented Oct 3, 2023 at 11:00

1 Answer 1

Reset to default
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To install the patched version from zx8754's answer above: devtools::install_github("kupietz/kableExtra")

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(noting also need to install devtools for us n00bs) install.packages("devtools")

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