Error(s) in re-building vignettes:
  ...
--- re-building ‘using_CEOdata.Rmd’ using rmarkdown
Loading required package: haven
Loading required package: dplyr

Attaching package: 'dplyr'

The following objects are masked from 'package:stats':

    filter, lag

The following objects are masked from 'package:base':

    intersect, setdiff, setequal, union

Loading required package: urltools
Loading required package: stringr
Loading required package: jsonlite
Package 'CEOdata' version 1.2.0.1
This package needs a working Internet connection to effectively run.
Please acknowledge the CEO in your publications.
Type "vignette('using_CEOdata')" or "vignette('cheatsheet')" for basic help.
Downloading the barometer.
trying URL ‘https://ceo.gencat.cat/web/.content/20_barometre/Matrius_BOP/Microdades_barometre.zip’
Content type 'application/zip' length 9831627 bytes (9.4 MB)
==================================================
downloaded 9.4 MB

Converting the original data into R. This may take a while.
Post-processing the data. This may take a while.
trying URL ‘https://ceo.gencat.cat/web/.content/30_estudis/repositorimatrius/2014/Microdades_anonimitzades_746.zip’
Content type 'application/zip' length 598204 bytes (584 KB)
==================================================
downloaded 584 KB

trying URL ‘https://ceo.gencat.cat/web/.content/20_barometre/Matrius_BOP/Microdades_barometre.zip’
Content type 'application/zip' length 9831627 bytes (9.4 MB)
==================================================
downloaded 9.4 MB

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

--- re-building ‘working_with_survey_data_using_the_CEOdata_package.Rmd’ using rmarkdown
Loading required package: haven
Loading required package: dplyr

Attaching package: 'dplyr'

The following objects are masked from 'package:stats':

    filter, lag

The following objects are masked from 'package:base':

    intersect, setdiff, setequal, union

Loading required package: urltools
Loading required package: stringr
Loading required package: jsonlite
Package 'CEOdata' version 1.2.0.1
This package needs a working Internet connection to effectively run.
Please acknowledge the CEO in your publications.
Type "vignette('using_CEOdata')" or "vignette('cheatsheet')" for basic help.
Downloading the barometer.
trying URL ‘https://ceo.gencat.cat/web/.content/20_barometre/Matrius_BOP/Microdades_barometre.zip’
Content type 'application/zip' length 9831627 bytes (9.4 MB)
==================================================
downloaded 9.4 MB

Converting the original data into R. This may take a while.
Post-processing the data. This may take a while.
Quitting from lines 70-82 (working_with_survey_data_using_the_CEOdata_package.Rmd) 
Error: processing vignette ‘working_with_survey_data_using_the_CEOdata_package.Rmd’ failed with diagnostics:
no applicable method for ‘separate_rows’ applied to an object of class "NULL"
--- failed re-building ‘working_with_survey_data_using_the_CEOdata_package.Rmd’

--- re-building ‘cheatsheet.pdf.asis’ using asis
--- finished re-building ‘cheatsheet.pdf.asis’

SUMMARY: processing the following file failed:
  ‘working_with_survey_data_using_the_CEOdata_package.Rmd’

Error: Vignette re-building failed.
Execution halted