Error(s) in re-building vignettes:
  ...
--- re-building ‘SW00_Introduction_to_sweep.Rmd’ using rmarkdown
Loading required package: lubridate

Attaching package: 'lubridate'

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

    date

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: 'PerformanceAnalytics'

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

    legend

Loading required package: quantmod
Loading required package: TTR
Version 0.4-0 included new data defaults. See ?getSymbols.
══ Need to Learn tidyquant? ═══════════════════════════════════════════════
Business Science offers a 1-hour course - Learning Lab #9: Performance Analysis & Portfolio Optimization with tidyquant!
</> Learn more at: https://university.business-science.io/p/learning-labs-pro </>
Quitting from lines 68-76 (SW00_Introduction_to_sweep.Rmd) 
Error: processing vignette 'SW00_Introduction_to_sweep.Rmd' failed with diagnostics:
could not find function "ggplot"
--- failed re-building ‘SW00_Introduction_to_sweep.Rmd’

--- re-building ‘SW01_Forecasting_Time_Series_Groups.Rmd’ using rmarkdown
Loading required package: lubridate

Attaching package: 'lubridate'

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

    date

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: 'PerformanceAnalytics'

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

    legend

Loading required package: quantmod
Loading required package: TTR
Version 0.4-0 included new data defaults. See ?getSymbols.
══ Need to Learn tidyquant? ═══════════════════════════════════════════════
Business Science offers a 1-hour course - Learning Lab #9: Performance Analysis & Portfolio Optimization with tidyquant!
</> Learn more at: https://university.business-science.io/p/learning-labs-pro </>
Quitting from lines 63-69 (SW01_Forecasting_Time_Series_Groups.Rmd) 
Error: processing vignette 'SW01_Forecasting_Time_Series_Groups.Rmd' failed with diagnostics:
could not find function "mutate"
--- failed re-building ‘SW01_Forecasting_Time_Series_Groups.Rmd’

--- re-building ‘SW02_Forecasting_Multiple_Models.Rmd’ using rmarkdown
Loading required package: lubridate

Attaching package: 'lubridate'

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

    date

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: 'PerformanceAnalytics'

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

    legend

Loading required package: quantmod
Loading required package: TTR
Version 0.4-0 included new data defaults. See ?getSymbols.
══ Need to Learn tidyquant? ═══════════════════════════════════════════════
Business Science offers a 1-hour course - Learning Lab #9: Performance Analysis & Portfolio Optimization with tidyquant!
</> Learn more at: https://university.business-science.io/p/learning-labs-pro </>
Quitting from lines 74-77 (SW02_Forecasting_Multiple_Models.Rmd) 
Error: processing vignette 'SW02_Forecasting_Multiple_Models.Rmd' failed with diagnostics:
could not find function "fill"
--- failed re-building ‘SW02_Forecasting_Multiple_Models.Rmd’

SUMMARY: processing the following files failed:
  ‘SW00_Introduction_to_sweep.Rmd’
  ‘SW01_Forecasting_Time_Series_Groups.Rmd’
  ‘SW02_Forecasting_Multiple_Models.Rmd’

Error: Vignette re-building failed.
Execution halted