Can you show us a minimal working example of what you are doing and supply some sample data?
Paste the code here between
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A handy way to provide some sample data is to do `dput(mydata) where "mydata" is the name of your dataset and copy the output here between
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If you have a large dataset dput(head(mydata, 100)) should give us enough to work with. You may find this helpfull Tips for writing R-related questions
I had the same problem even with the template Rmarkdown example.
There was some version conflict in my renv library.
Update to the latest {evaluate} package (1.0.0) and it should go away!