Hi all,
I've used Roundcube for a number of years (used the Ubuntu package and didn't upgrade). In the last day or so, I've been getting the above error.
My IMAP server is still up and working (I can get emails in Thunderbird and on my phone), no errors are logged in the debug files and I'm utterly mystified.
Just in case something was wrong, I set it up on a spare web server (Devuan, up to date) and got the same error.
The above error only happens in Firefox Quantum (my default browser) - if I use IE11 (spit) it seems to work.
Any ideas?
Cheers,
Phil