Randomly appearing Error 500 with activated Program/Sponsor function

[Mijar007]

Describe the bug
I activated the Program (Sponsor) option in the server settings, as shown in the screenshot below.
After creating a program and setting a non-SEEK-admin as Program-admin, I tried to create Trial Projects in the Program.
I gave the Trial Project a titel and pushed "create".
The next page was an Error 500 page.
After going back in the browser, I saw, that the project was created. As I tried to open it, I saw Error 500 again.
However, the Error 500 appears randomly (see attached mp4).
I observed no difference in the error appearance between the Program-admin and the SEEK-admin account.

Expected behavior
No error 500.

Screenshots
Server Settings:

Error 500 MP4 clip:
https://github.com/user-attachments/assets/e9382063-de60-4454-9757-5dd57e44bc0e

[Mijar007]

The same behavior (random Error 500) after adding a member to a programs Trial Project and after setting his role as Trial Project admin

[Mijar007]

I noticed, that the Error also appeared on other unrelated sites in the LDH (My items, non-Program Trial Projects).
After deactivating the Program option, everything was fine again.
It looks like the whole Program function is buggy.