'LazyData' is specified without a 'data' directory
'LazyData' is specified without a 'data' directory
'LazyData' is specified without a 'data' directory
'LazyData' is specified without a 'data' directory
'LazyData' is specified without a 'data' directory
'LazyData' is specified without a 'data' directory
'LazyData' is specified without a 'data' directory
'LazyData' is specified without a 'data' directory
Error(s) in re-building vignettes:
  ...
--- re-building ‘examples.Rmd’ using rmarkdown
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  Pandoc (>= 1.12.3) not available. Falling back to R Markdown v1.

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


── Column specification ────────────────────────────────────────────────────────
cols(
  Favorable = col_double(),
  Unfavorable = col_double(),
  Undecided = col_double(),
  poll_slug = col_character(),
  survey_house = col_character(),
  start_date = col_date(format = ""),
  end_date = col_date(format = ""),
  question_text = col_character(),
  sample_subpopulation = col_character(),
  observations = col_double(),
  margin_of_error = col_double(),
  mode = col_character(),
  partisanship = col_character(),
  partisan_affiliation = col_character()
)


── Column specification ────────────────────────────────────────────────────────
cols(
  label = col_character(),
  date = col_date(format = ""),
  value = col_double(),
  low = col_logical(),
  high = col_logical()
)

Quitting from lines 78-80 (examples.Rmd) 
Error: processing vignette 'examples.Rmd' failed with diagnostics:
API did not return json.
--- failed re-building ‘examples.Rmd’

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

Error: Vignette re-building failed.
Execution halted