Just switched to English and get basically the same error as shown in the original comment. So yes, it's also crashing in English.
Oh, I just found this (already closed) issue https://github.com/TerryCavanagh/diceydungeons.com/issues/873
paxed mentions on Aug 26, 2019 "This issue seems to be back, [...] Click on Play, you get to the cut scene with the jester, and when he tries to speak, kaboom." - which is exactly what I'm experiencing.
Also, cosmicchipsocket commented there that ...
I know the cause of this and it's because Lime's OpenAL is using SSE 4.1 instructions. If your CPU doesn't support them it will crash with an "illegal instruction" error.
SSE4a does not count as SSE 4.1.
Maybe that helps tracking it down. It would fit the error messages & backtrace details?