Rendering RMarkdown documents in Cloud returns Error: object ‘faststack’ is not exported by 'namespace:fastmap'

Hi there: I'm trying to render a simple Rmarkdown document in RStudio cloud and it returns this error:
Error: object ‘faststack’ is not exported by 'namespace:fastmap'

Any ideas

This suggests the fastmap package is not properly installed in your project or it is outdated, try reinstalling/updating the package with


Do you get any error messages while doing so?

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