What's the error text?
Try replacing the koboldcpp.exe file in Silverpine_Data\StreamingAssets\KoboldCPP with this new version https://github.com/LostRuins/koboldcpp/releases/download/v1.83.1/koboldcpp.exe.
Replace the 467832398 inside koboldcpp.seal (just open it with a text editor) with 485539629 or the game will think koboldcpp.exe has been corrupted.
I'm not sure what could be the issue if it just sits there instead of crashing.