Active Tasks tab http error 500 (only this tab)

[MRSG]

Hello everyone and thank you in advance for the support. I have been using Fog in the company since 2017 and this is the first time I am asking for help. I have about 120 snap-ins that work through batch files and a Software Repository (DFS share). I created a specific group of computers by inserting all the company’s machines (206) and I launched the single snap-in task (one by one… a snap-in group feature?) for this group of 8 common software after updating the relevant Software Repository with the latest versions of these software installers.
Everything works perfectly, the snap-ins are installed, net of the PCs that remain in queue due to an invalid auth token, except for the fact that now the “Tasks” tab from the Fog administration web interface goes into error (http 500). All other tabs are perfectly accessible. I restarted the FOG server but the problem persists.
Details:
Fog server: VM Debian 5.10.197-1
Fog version: 1.5.10
Thanks again.