[OJS 3.4.0.10] usageEventLogs files are not moved to stage folder

Describe the issue or problem
I updated the system from 3.3.0.x to 3.4.0.10, everything was fine, but after a couple of days I noticed that it was no longer processing the .log files in the “usageEventLogs” folder; the files remained in that folder and were not being moved. Checking the files in the “scheduledTaskLogs” folder, I saw that the last time statistics were processed was the day before the update. I don’t know how to solve the problem because I don’t have a file where I can check if there is any kind of error. It seems that the process of processing the statistics files has stopped.

What application are you using?
For example, OJS 3.4.0-10

Can you assist me in resolving this difficulty?
Thanks

Bye
Tiziano