Nov 11 2019
Thank you very much, @Foxtrott ! I've updated to MW 1.33 and Lingo seem to be working fine right now.
Nov 10 2019
OK, so I enabled debugging and here's what I got. Does it help in any way?
Unfortunately MW is on a shared hosting and I don't have access to the error logs. What exactly do you need, so that I can request it from the support team?