Error message duplicate folders

I don’t know why it is doing this, but it keeps on displaying the error message:
[IMAP] Creating or updating folder ‘/Junk E-mail’ failed due to the following error: Duplicate folder name (Failure)

This has been happening for like 5 days. I actually thought it was because there is a folder called “junk” in my personal folders in Gmail, so I deleted it, but the message keeps showing up in operations. It’s not the biggest deal because I have disabled operations pop-ups, but would prefer to have them on in case that there are more serious errors that need attention.

Is there a way to stop these errors from happening?