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

Quitting from canopy-model.Rmd:31-37 [unnamed-chunk-2]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
<error/rlang_error>
Error:
! package or namespace load failed for 'kableExtra' in loadNamespace(j <- i[[1L]], c(lib.loc, .libPaths()), versionCheck = vI[[j]]):
 there is no package called 'systemfonts'
---
Backtrace:
    ▆
 1. └─base::library(kableExtra)
 2.   └─base::tryCatch(...)
 3.     └─base (local) tryCatchList(expr, classes, parentenv, handlers)
 4.       └─base (local) tryCatchOne(expr, names, parentenv, handlers[[1L]])
 5.         └─value[[3L]](cond)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Error: processing vignette 'canopy-model.Rmd' failed with diagnostics:
package or namespace load failed for 'kableExtra' in loadNamespace(j <- i[[1L]], c(lib.loc, .libPaths()), versionCheck = vI[[j]]):
 there is no package called 'systemfonts'
--- failed re-building ‘canopy-model.Rmd’

--- re-building ‘how_to_start.Rmd’ using rmarkdown
--- finished re-building ‘how_to_start.Rmd’

--- re-building ‘maturity-model.Rmd’ using rmarkdown

Quitting from maturity-model.Rmd:49-55 [unnamed-chunk-2]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
<error/rlang_error>
Error:
! package or namespace load failed for 'kableExtra' in loadNamespace(j <- i[[1L]], c(lib.loc, .libPaths()), versionCheck = vI[[j]]):
 there is no package called 'systemfonts'
---
Backtrace:
    ▆
 1. └─base::library(kableExtra)
 2.   └─base::tryCatch(...)
 3.     └─base (local) tryCatchList(expr, classes, parentenv, handlers)
 4.       └─base (local) tryCatchOne(expr, names, parentenv, handlers[[1L]])
 5.         └─value[[3L]](cond)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Error: processing vignette 'maturity-model.Rmd' failed with diagnostics:
package or namespace load failed for 'kableExtra' in loadNamespace(j <- i[[1L]], c(lib.loc, .libPaths()), versionCheck = vI[[j]]):
 there is no package called 'systemfonts'
--- failed re-building ‘maturity-model.Rmd’

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

Quitting from plotting.Rmd:21-29 [setup]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
<error/rlang_error>
Error:
! package or namespace load failed for 'kableExtra' in loadNamespace(j <- i[[1L]], c(lib.loc, .libPaths()), versionCheck = vI[[j]]):
 there is no package called 'systemfonts'
---
Backtrace:
    ▆
 1. └─base::library(kableExtra)
 2.   └─base::tryCatch(...)
 3.     └─base (local) tryCatchList(expr, classes, parentenv, handlers)
 4.       └─base (local) tryCatchOne(expr, names, parentenv, handlers[[1L]])
 5.         └─value[[3L]](cond)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Error: processing vignette 'plotting.Rmd' failed with diagnostics:
package or namespace load failed for 'kableExtra' in loadNamespace(j <- i[[1L]], c(lib.loc, .libPaths()), versionCheck = vI[[j]]):
 there is no package called 'systemfonts'
--- failed re-building ‘plotting.Rmd’

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

Quitting from predicted_values.Rmd:37-45 [setup]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
<error/rlang_error>
Error:
! package or namespace load failed for 'kableExtra' in loadNamespace(j <- i[[1L]], c(lib.loc, .libPaths()), versionCheck = vI[[j]]):
 there is no package called 'systemfonts'
---
Backtrace:
    ▆
 1. └─base::library(kableExtra)
 2.   └─base::tryCatch(...)
 3.     └─base (local) tryCatchList(expr, classes, parentenv, handlers)
 4.       └─base (local) tryCatchOne(expr, names, parentenv, handlers[[1L]])
 5.         └─value[[3L]](cond)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Error: processing vignette 'predicted_values.Rmd' failed with diagnostics:
package or namespace load failed for 'kableExtra' in loadNamespace(j <- i[[1L]], c(lib.loc, .libPaths()), versionCheck = vI[[j]]):
 there is no package called 'systemfonts'
--- failed re-building ‘predicted_values.Rmd’

SUMMARY: processing the following files failed:
  ‘canopy-model.Rmd’ ‘maturity-model.Rmd’ ‘plotting.Rmd’
  ‘predicted_values.Rmd’

Error: Vignette re-building failed.
Execution halted