Error(s) in re-building vignettes:
--- re-building 'ar-ssm.Rmd' using rmarkdown

Attaching package: 'caracas'

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

    %*%, det, diag, diag<-

--- finished re-building 'ar-ssm.Rmd'

--- re-building 'arbitrary-precision-arithmetic.Rmd' using rmarkdown

Attaching package: 'caracas'

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

    %*%, det, diag, diag<-

--- finished re-building 'arbitrary-precision-arithmetic.Rmd'

--- re-building 'fastest-route.Rmd' using rmarkdown

Attaching package: 'caracas'

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

    %*%, det, diag, diag<-

--- finished re-building 'fastest-route.Rmd'

--- re-building 'introduction.Rmd' using rmarkdown

Attaching package: 'caracas'

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

    %*%, det, diag, diag<-

--- finished re-building 'introduction.Rmd'

--- re-building 'linear-algebra.Rmd' using rmarkdown

Attaching package: 'caracas'

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

    %*%, det, diag, diag<-

--- finished re-building 'linear-algebra.Rmd'

--- re-building 'reference.Rmd' using rmarkdown

Attaching package: 'caracas'

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

    %*%, det, diag, diag<-

Quitting from lines 200-214 (reference.Rmd) 
Error: processing vignette 'reference.Rmd' failed with diagnostics:
AttributeError: MutableDenseMatrix has no attribute diagonal.

Detailed traceback: 
  File "C:\Users\tomas\AppData\Local\basilisk\105CB4~1.2\0\lib\site-packages\sympy\matrices\matrices.py", line 2141, in __getattr__
    "%s has no attribute %s." % (self.__class__.__name__, attr))

--- failed re-building 'reference.Rmd'

--- re-building 'sympy-object.Rmd' using rmarkdown

Attaching package: 'caracas'

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

    %*%, det, diag, diag<-

--- finished re-building 'sympy-object.Rmd'

SUMMARY: processing the following file failed:
  'reference.Rmd'

Error: Vignette re-building failed.
Execution halted