Sometimes, when I click on an item and a menu opens, the game freezes and I see a code.

I think I might have overflowed some character field with this long string, but I have no idea why it keeps popping up in random screens, not the one where I pasted it. Also, I already restarted the game lots of times (I have to when it freezes) so it's not a temporarily thing.
I haven't seen it here yet so I wonder what this is and if there is an solution