Error(s) in re-building vignettes:
  ...
--- re-building ‘epidatr.Rmd’ using rmarkdown
** Processing: /home/hornik/tmp/R.check/r-release-gcc/Work/PKGS/epidatr.Rcheck/vign_test/epidatr/vignettes/epidatr_files/figure-html/unnamed-chunk-7-1.png
288x288 pixels, 8 bits/pixel, 256 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 7934 bytes
Input file size = 8792 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 7311
  zc = 9  zm = 8  zs = 1  f = 0
  zc = 1  zm = 8  zs = 2  f = 0
  zc = 9  zm = 8  zs = 3  f = 0
  zc = 9  zm = 8  zs = 0  f = 5
  zc = 9  zm = 8  zs = 1  f = 5
  zc = 1  zm = 8  zs = 2  f = 5
  zc = 9  zm = 8  zs = 3  f = 5
                               
Selecting parameters:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 7311

Output IDAT size = 7311 bytes (623 bytes decrease)
Output file size = 7389 bytes (1403 bytes = 15.96% decrease)

** Processing: /home/hornik/tmp/R.check/r-release-gcc/Work/PKGS/epidatr.Rcheck/vign_test/epidatr/vignettes/epidatr_files/figure-html/unnamed-chunk-8-1.png
288x288 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 25266 bytes
Input file size = 25380 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 20453
  zc = 9  zm = 8  zs = 1  f = 0
  zc = 1  zm = 8  zs = 2  f = 0
  zc = 9  zm = 8  zs = 3  f = 0
  zc = 9  zm = 8  zs = 0  f = 5
  zc = 9  zm = 8  zs = 1  f = 5
  zc = 1  zm = 8  zs = 2  f = 5
  zc = 9  zm = 8  zs = 3  f = 5
                               
Selecting parameters:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 20453

Output IDAT size = 20453 bytes (4813 bytes decrease)
Output file size = 20531 bytes (4849 bytes = 19.11% decrease)

--- finished re-building ‘epidatr.Rmd’

--- re-building ‘signal-discovery.Rmd’ using rmarkdown

Quitting from lines 78-79 [unnamed-chunk-6] (signal-discovery.Rmd)
Error: processing vignette 'signal-discovery.Rmd' failed with diagnostics:
ℹ In index: 457.
ℹ With name: nhsn:confirmed_admissions_covid_ew.
Caused by error:
! Result must be length 1, not 0.
--- failed re-building ‘signal-discovery.Rmd’

--- re-building ‘versioned-data.Rmd’ using rmarkdown
--- finished re-building ‘versioned-data.Rmd’

SUMMARY: processing the following file failed:
  ‘signal-discovery.Rmd’

Error: Vignette re-building failed.
Execution halted