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

Attaching package: 'purrr'

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

    %@%, as_function, flatten, flatten_chr, flatten_dbl, flatten_int,
    flatten_lgl, flatten_raw, invoke, list_along, modify, prepend,
    splice


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: The `x` argument of `as_tibble.matrix()` must have column names if `.name_repair` is omitted as of tibble 2.0.0.
Using compatibility `.name_repair`.
This warning is displayed once every 8 hours.
Call `lifecycle::last_warnings()` to see where this warning was generated.
Joining, by = "class"
Warning: Unknown levels in `f`: radf
Quitting from lines 22-50 (Tidy.Rmd) 
Error: processing vignette 'Tidy.Rmd' failed with diagnostics:
'where' must be an environment
--- failed re-building ‘Tidy.Rmd’

--- re-building ‘exuber.Rmd’ using rmarkdown
Using 'radf_crit' for 'cv'.
Using 'radf_crit' for 'cv'.
Using 'radf_crit' for 'cv'.
Using 'radf_crit' for 'cv'.
Using 'radf_crit' for 'cv'.
--- finished re-building ‘exuber.Rmd’

--- re-building ‘plotting.Rmd’ using rmarkdown

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

Scale for 'colour' is already present. Adding another scale for 'colour',
which will replace the existing scale.

Attaching package: 'gridExtra'

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

    combine

--- finished re-building ‘plotting.Rmd’

--- re-building ‘simulation.Rmd’ using rmarkdown

Attaching package: 'dplyr'

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

    combine

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

    filter, lag

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

    intersect, setdiff, setequal, union

--- finished re-building ‘simulation.Rmd’

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

Error: Vignette re-building failed.
Execution halted