Error(s) in re-building vignettes:
  ...
--- re-building ‘sparql-queries.Rmd’ using rmarkdown

Quitting from sparql-queries.Rmd:49-54 [precompute]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
<error/rlang_error>
Error in `read_xml.raw()`:
! Document is empty [4]
---
Backtrace:
    ▆
 1. ├─... %>% elx_run_query()
 2. └─eurlex::elx_run_query(.)
 3.   └─eurlex:::elx_parse_xml(sparql_response)
 4.     ├─xml2::read_xml(sparql_response)
 5.     └─xml2:::read_xml.response(sparql_response)
 6.       ├─xml2::read_xml(...)
 7.       └─xml2:::read_xml.raw(...)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Error: processing vignette 'sparql-queries.Rmd' failed with diagnostics:
Document is empty [4]
--- failed re-building ‘sparql-queries.Rmd’

SUMMARY: processing the following file failed:
  ‘sparql-queries.Rmd’

Error: Vignette re-building failed.
Execution halted
Error(s) in re-building vignettes:
--- re-building ‘sparql-queries.Rmd’ using rmarkdown

Quitting from sparql-queries.Rmd:49-54 [precompute]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
<error/rlang_error>
Error in `UseMethod()`:
! no applicable method for 'select' applied to an object of class "NULL"
---
Backtrace:
    ▆
 1. └─dplyr::select(dirs, -force, -date)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Error: processing vignette 'sparql-queries.Rmd' failed with diagnostics:
no applicable method for 'select' applied to an object of class "NULL"
--- failed re-building ‘sparql-queries.Rmd’

SUMMARY: processing the following file failed:
  ‘sparql-queries.Rmd’

Error: Vignette re-building failed.
Execution halted