Last R STudio upgrade.

After upgrading the R STUDIO, some functions from packages forecast and ggplot just don't work.
For example: ma, autoplot, ndiffs, etc.
How can I fix it?

Hi, welcome!

We don't really have enough info to help you out, RStudio is an IDE for the R programming language but it has no direct effect on your R package library so it is unlikely the cause of your problem. Could you ask this with a minimal REPRoducible EXample (reprex)? A reprex makes it much easier for others to understand your issue and figure out how to help.

If you've never heard of a reprex before, you might want to start by reading this FAQ:

Did you copy over your packages from the previous R version? Some R tools do that, but this does not work in general. If you did that you'll need to reinstall all your packages.

I did it as you say and now it’s work

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