Error(s) in re-building vignettes:
--- re-building ‘getting-started.Rmd’ using rmarkdown
── Attaching packages ────────────────────────────────────── tidymodels 0.2.0 ──
✔ broom        0.8.0     ✔ recipes      0.2.0
✔ dials        0.1.1     ✔ rsample      0.1.1
✔ dplyr        1.0.9     ✔ tibble       3.1.7
✔ ggplot2      3.3.6     ✔ tidyr        1.2.0
✔ infer        1.0.0     ✔ tune         0.2.0
✔ modeldata    0.1.1     ✔ workflows    0.2.6
✔ parsnip      0.2.1     ✔ workflowsets 0.2.1
✔ purrr        0.3.4     ✔ yardstick    0.0.9
── Conflicts ───────────────────────────────────────── tidymodels_conflicts() ──
✖ purrr::discard() masks scales::discard()
✖ dplyr::filter()  masks stats::filter()
✖ dplyr::lag()     masks stats::lag()
✖ recipes::step()  masks stats::step()
• Use tidymodels_prefer() to resolve common conflicts.
── Attaching packages ─────────────────────────────────────── tidyverse 1.3.1 ──
✔ readr   2.1.2     ✔ forcats 0.5.1
✔ stringr 1.4.0     
── Conflicts ────────────────────────────────────────── tidyverse_conflicts() ──
✖ readr::col_factor() masks scales::col_factor()
✖ purrr::discard()    masks scales::discard()
✖ dplyr::filter()     masks stats::filter()
✖ stringr::fixed()    masks recipes::fixed()
✖ dplyr::lag()        masks stats::lag()
✖ readr::spec()       masks yardstick::spec()
Using date_var: date
Quitting from lines 123-129 (getting-started.Rmd) 
Error: processing vignette 'getting-started.Rmd' failed with diagnostics:
Can't convert an empty character vector to a symbol.
--- failed re-building ‘getting-started.Rmd’

--- re-building ‘panel-data.Rmd’ using rmarkdown
Loading required package: lubridate

Attaching package: 'lubridate'

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

    date, intersect, setdiff, union

Loading required package: PerformanceAnalytics
Loading required package: xts
Loading required package: zoo

Attaching package: 'zoo'

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

    as.Date, as.Date.numeric


Attaching package: 'xts'

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

    first, last


Attaching package: 'PerformanceAnalytics'

The following object is masked from 'package:graphics':

    legend

Loading required package: quantmod
Loading required package: TTR

Attaching package: 'TTR'

The following object is masked from 'package:modeltime':

    growth

The following object is masked from 'package:dials':

    momentum

Data is not ordered by the 'date_var'. Resamples will be arranged by `Date`.
Overlapping Timestamps Detected. Processing overlapping time series together using sliding windows.
Disabling weekly seasonality. Run prophet with weekly.seasonality=TRUE to override this.
Disabling daily seasonality. Run prophet with daily.seasonality=TRUE to override this.
Warning in max(ids, na.rm = TRUE) :
  no non-missing arguments to max; returning -Inf
Warning in max(ids, na.rm = TRUE) :
  no non-missing arguments to max; returning -Inf
Warning in max(ids, na.rm = TRUE) :
  no non-missing arguments to max; returning -Inf
Warning in max(ids, na.rm = TRUE) :
  no non-missing arguments to max; returning -Inf
Warning in max(ids, na.rm = TRUE) :
  no non-missing arguments to max; returning -Inf
Warning in max(ids, na.rm = TRUE) :
  no non-missing arguments to max; returning -Inf
Warning in max(ids, na.rm = TRUE) :
  no non-missing arguments to max; returning -Inf
--- finished re-building ‘panel-data.Rmd’

SUMMARY: processing the following file failed:
  ‘getting-started.Rmd’

Error: Vignette re-building failed.
Execution halted