Error(s) in re-building vignettes:
  ...
--- re-building ‘combine_forecasts.Rmd’ using rmarkdown
[WARNING] Deprecated: --highlight-style. Use --syntax-highlighting instead.
--- finished re-building ‘combine_forecasts.Rmd’

--- re-building ‘custom_functions.Rmd’ using rmarkdown
[WARNING] Deprecated: --highlight-style. Use --syntax-highlighting instead.
--- finished re-building ‘custom_functions.Rmd’

--- re-building ‘grouped_forecast.Rmd’ using rmarkdown
[16:09:56] WARNING: src/objective/regression_obj.cu:282: reg:linear is now deprecated in favor of reg:squarederror.
[16:10:01] WARNING: src/objective/regression_obj.cu:282: reg:linear is now deprecated in favor of reg:squarederror.
[16:10:06] WARNING: src/objective/regression_obj.cu:282: reg:linear is now deprecated in favor of reg:squarederror.
[16:10:12] WARNING: src/objective/regression_obj.cu:282: reg:linear is now deprecated in favor of reg:squarederror.
[16:10:15] WARNING: src/objective/regression_obj.cu:282: reg:linear is now deprecated in favor of reg:squarederror.
[16:10:20] WARNING: src/objective/regression_obj.cu:282: reg:linear is now deprecated in favor of reg:squarederror.
[16:10:25] WARNING: src/objective/regression_obj.cu:282: reg:linear is now deprecated in favor of reg:squarederror.
[16:10:27] WARNING: src/objective/regression_obj.cu:282: reg:linear is now deprecated in favor of reg:squarederror.
[16:10:28] WARNING: src/objective/regression_obj.cu:282: reg:linear is now deprecated in favor of reg:squarederror.

Quitting from grouped_forecast.Rmd:320-322 [unnamed-chunk-14]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
<error/rlang_error>
Error in `array()`:
! length of 'dimnames' [1] not equal to array extent
---
Backtrace:
    ▆
 1. ├─base::summary(model_results_cv$horizon_1$window_1$model)
 2. └─base::summary.default(model_results_cv$horizon_1$window_1$model)
 3.   └─base::array(...)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Error: processing vignette 'grouped_forecast.Rmd' failed with diagnostics:
length of 'dimnames' [1] not equal to array extent
--- failed re-building ‘grouped_forecast.Rmd’

--- re-building ‘lagged_features.Rmd’ using rmarkdown
[WARNING] Deprecated: --highlight-style. Use --syntax-highlighting instead.
--- finished re-building ‘lagged_features.Rmd’

--- re-building ‘package_overview.Rmd’ using rmarkdown
[WARNING] Deprecated: --highlight-style. Use --syntax-highlighting instead.
--- finished re-building ‘package_overview.Rmd’

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

Error: Vignette re-building failed.
Execution halted