Error(s) in re-building vignettes:
--- re-building ‘bes-2015.Rmd’ using rmarkdown
--- finished re-building ‘bes-2015.Rmd’

--- re-building ‘bes-2017.Rmd’ using rmarkdown
--- finished re-building ‘bes-2017.Rmd’

--- re-building ‘census-11.Rmd’ using rmarkdown
--- finished re-building ‘census-11.Rmd’

--- re-building ‘introduction.Rmd’ using rmarkdown
Linking to GEOS 3.6.1, GDAL 2.2.4, PROJ 4.9.3

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

Downloading constituency data
Connecting to API
Retrieving page 1 of 7
Retrieving page 2 of 7
Retrieving page 3 of 7
Retrieving page 4 of 7
Retrieving page 5 of 7
Retrieving page 6 of 7
Retrieving page 7 of 7
Joining, by = c("pano", "ons_const_id", "constituency_name", "country", "region", "constituency_type")
`geom_smooth()` using method = 'loess' and formula 'y ~ x'
Warning: Removed 60 rows containing non-finite values (stat_smooth).
Warning: Removed 60 rows containing missing values (geom_point).
--- finished re-building ‘introduction.Rmd’

--- re-building ‘mapping-local-authorities.Rmd’ using rmarkdown
Linking to GEOS 3.6.1, GDAL 2.2.4, PROJ 4.9.3

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

Quitting from lines 18-66 (mapping-local-authorities.Rmd) 
Error: processing vignette 'mapping-local-authorities.Rmd' failed with diagnostics:
Unknown column `last` 
Backtrace:
     █
  1. ├─tools:::.buildOneVignette(...)
  2. │ ├─base::tryCatch(...)
  3. │ │ └─base:::tryCatchList(expr, classes, parentenv, handlers)
  4. │ │   └─base:::tryCatchOne(expr, names, parentenv, handlers[[1L]])
  5. │ │     └─base:::doTryCatch(return(expr), name, parentenv, handler)
  6. │ └─engine$weave(file, quiet = quiet, encoding = enc)
  7. │   └─knitr:::vweave_rmarkdown(...)
  8. │     └─rmarkdown::render(...)
  9. │       └─knitr::knit(...)
 10. │         └─knitr:::process_file(text, output)
 11. │           ├─base::withCallingHandlers(...)
 12. │           ├─knitr:::process_group(group)
 13. │           └─knitr:::process_group.block(group)
 14. │             └─knitr:::call_block(x)
 15. │               └─knitr:::block_exec(params)
 16. │                 ├─knitr:::in_dir(...)
 17. │                 └─knitr:::evaluate(...)
 18. │                   └─evaluate::evaluate(...)
 19. │                     └─evaluate:::evaluate_call(...)
 20. │                       ├─evaluate:::timing_fn(...)
 21. │                       ├─base:::handle(...)
 22. │                       ├─base::withCallingHandlers(...)
 23. │                       ├─base::withVisible(eval(expr, envir, enclos))
 24. │                       └─base::eval(expr, envir, enclos)
 25. │                         └─base::eval(expr, envir, enclos)
 26. └─parlitools::council_seats()
 27.   ├─dplyr::rename(...)
 28.   └─dplyr:::rename.data.frame(...)
 29.     └─tidyselect::vars_rename(names(.data), !!!quos(...))
 30.       └─tidyselect:::bad_unknown_vars(.vars, unknown)
--- failed re-building ‘mapping-local-authorities.Rmd’

--- re-building ‘using-cartograms.Rmd’ using rmarkdown
Linking to GEOS 3.6.1, GDAL 2.2.4, PROJ 4.9.3

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

Warning: Column `winner_17`/`party_name` joining factors with different levels, coercing to character vector

Please use cartogram_cont() instead of cartogram().

Warning in RGEOSMiscFunc(spgeom, byid, "rgeos_area") :
  Spatial object is not projected; GEOS expects planar coordinates
Warning in RGEOSMiscFunc(spgeom, byid, "rgeos_area") :
  Spatial object is not projected; GEOS expects planar coordinates
Warning in RGEOSMiscFunc(spgeom, byid, "rgeos_area") :
  Spatial object is not projected; GEOS expects planar coordinates
Warning in RGEOSMiscFunc(spgeom, byid, "rgeos_area") :
  Spatial object is not projected; GEOS expects planar coordinates
Mean size error for iteration 1: 1.84051824940637
Warning in RGEOSMiscFunc(spgeom, byid, "rgeos_area") :
  Spatial object is not projected; GEOS expects planar coordinates
Warning in RGEOSMiscFunc(spgeom, byid, "rgeos_area") :
  Spatial object is not projected; GEOS expects planar coordinates
Mean size error for iteration 2: 1.57795616352671
Warning in RGEOSMiscFunc(spgeom, byid, "rgeos_area") :
  Spatial object is not projected; GEOS expects planar coordinates
Warning in RGEOSMiscFunc(spgeom, byid, "rgeos_area") :
  Spatial object is not projected; GEOS expects planar coordinates
Mean size error for iteration 3: 1.38542765296568
Warning in RGEOSMiscFunc(spgeom, byid, "rgeos_area") :
  Spatial object is not projected; GEOS expects planar coordinates
Warning in RGEOSMiscFunc(spgeom, byid, "rgeos_area") :
  Spatial object is not projected; GEOS expects planar coordinates
Mean size error for iteration 4: 1.24990590568916
Warning in RGEOSMiscFunc(spgeom, byid, "rgeos_area") :
  Spatial object is not projected; GEOS expects planar coordinates
Warning in RGEOSMiscFunc(spgeom, byid, "rgeos_area") :
  Spatial object is not projected; GEOS expects planar coordinates
Mean size error for iteration 5: 1.15911005794951
Warning in RGEOSMiscFunc(spgeom, byid, "rgeos_area") :
  Spatial object is not projected; GEOS expects planar coordinates
Warning in RGEOSMiscFunc(spgeom, byid, "rgeos_area") :
  Spatial object is not projected; GEOS expects planar coordinates
Mean size error for iteration 6: 1.10049759826218
Warning in RGEOSMiscFunc(spgeom, byid, "rgeos_area") :
  Spatial object is not projected; GEOS expects planar coordinates
Warning in RGEOSMiscFunc(spgeom, byid, "rgeos_area") :
  Spatial object is not projected; GEOS expects planar coordinates
Mean size error for iteration 7: 1.06348707731059
Warning in RGEOSMiscFunc(spgeom, byid, "rgeos_area") :
  Spatial object is not projected; GEOS expects planar coordinates
Warning in RGEOSMiscFunc(spgeom, byid, "rgeos_area") :
  Spatial object is not projected; GEOS expects planar coordinates
Mean size error for iteration 8: 1.04029321041635
Warning in RGEOSMiscFunc(spgeom, byid, "rgeos_area") :
  Spatial object is not projected; GEOS expects planar coordinates
Warning in RGEOSMiscFunc(spgeom, byid, "rgeos_area") :
  Spatial object is not projected; GEOS expects planar coordinates
Mean size error for iteration 9: 1.02573148730624
Warning in RGEOSMiscFunc(spgeom, byid, "rgeos_area") :
  Spatial object is not projected; GEOS expects planar coordinates
Warning in RGEOSMiscFunc(spgeom, byid, "rgeos_area") :
  Spatial object is not projected; GEOS expects planar coordinates
Mean size error for iteration 10: 1.01655498377918
Warning in RGEOSMiscFunc(spgeom, byid, "rgeos_area") :
  Spatial object is not projected; GEOS expects planar coordinates
Warning in RGEOSMiscFunc(spgeom, byid, "rgeos_area") :
  Spatial object is not projected; GEOS expects planar coordinates
Mean size error for iteration 11: 1.01074124278594
Warning in RGEOSMiscFunc(spgeom, byid, "rgeos_area") :
  Spatial object is not projected; GEOS expects planar coordinates
Warning in RGEOSMiscFunc(spgeom, byid, "rgeos_area") :
  Spatial object is not projected; GEOS expects planar coordinates
Mean size error for iteration 12: 1.00702644638021
Warning in RGEOSMiscFunc(spgeom, byid, "rgeos_area") :
  Spatial object is not projected; GEOS expects planar coordinates
Warning in RGEOSMiscFunc(spgeom, byid, "rgeos_area") :
  Spatial object is not projected; GEOS expects planar coordinates
Mean size error for iteration 13: 1.00463696776579
Warning in RGEOSMiscFunc(spgeom, byid, "rgeos_area") :
  Spatial object is not projected; GEOS expects planar coordinates
Warning in RGEOSMiscFunc(spgeom, byid, "rgeos_area") :
  Spatial object is not projected; GEOS expects planar coordinates
Mean size error for iteration 14: 1.00308488963412
Warning in RGEOSMiscFunc(spgeom, byid, "rgeos_area") :
  Spatial object is not projected; GEOS expects planar coordinates
Warning in RGEOSMiscFunc(spgeom, byid, "rgeos_area") :
  Spatial object is not projected; GEOS expects planar coordinates
Mean size error for iteration 15: 1.0020731354118
--- finished re-building ‘using-cartograms.Rmd’

SUMMARY: processing the following file failed:
  ‘mapping-local-authorities.Rmd’

Error: Vignette re-building failed.
Execution halted