Warning message: package ‘ggplot2’ was built under R version 3.4.4

[mara]

@mishabalyasin is correct, some of which I expressed in my response to the GitHub issue you opened re. same:

Warning message: package ‘ggplot2’ was built under R version 3.4.4

In the future, please take into account that we try to avoid cross-posting of active questions for this very reason— (roughly four hours ago, Misha and I both answered your question, not knowing that the other was doing so on a different platform).

That's not to say that issues won't be mentioned here on the community site— in fact, I know I've referred issues here, and vice-versa, many a question here in community have turned out to be bugs or feature requests reported or made in the appropriate GitHub repos. However, we ask that you avoid concurrently cross posting.

For more detail, see the FAQ below:

FAQ: Is it OK if I cross-post?

Posting the same question both here and on other sites Posting the same question to multiple forums at the same time is often considered impolite. We don't completely ban such cross-posting, but we ask you to think hard before you do it and to follow some rules. Cross-post sparingly Rather than post the same thing here and elsewhere from the get-go, post in one place at a time. Let enough time go by (think days, not hours) before you take your question somewhere else. Sometimes people at another site may suggest you post here if your question doesn't fit within the scope of the other site. Always link to your other posts, and update everywhere with any solution…