ERR failed mailed to fetch eml - problem with pop3

On Friday, I stopped downloading the mail program from mail server. After refreshing, a message pops up: “ERR failed mailed to fetch eml”. Sending messages is done correctly…

Configuration changes, reinstallation of the program and removing accounts did not help to solve the problem.

I will add that “” downloads messages without any problem.

Question, how to solve this problem? On the second computer I have the same problem with an email based on the server

I attach photos.

Yours sincerely,