Error(s) in re-building vignettes:
  ...
--- re-building ‘klassR-vignette.Rmd’ using rmarkdown
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GET https://data.ssb.no/api/klass/v1/classifications/6/codesAt?date=2022-06-02&language=nb (classifications/6/codesAt-2015fc.json)
Quitting from lines 124-125 (klassR-vignette.Rmd) 
Error: processing vignette ‘klassR-vignette.Rmd’ failed with diagnostics:

--- failed re-building ‘klassR-vignette.Rmd’

SUMMARY: processing the following file failed:
  ‘klassR-vignette.Rmd’

Error: Vignette re-building failed.
Execution halted