14867.685 Error Util.cpp:95: Unexpected error occurred. If you're running the latest version of the game you can help us solve the problem by posting the contents of the log file on the Factorio forums.
Please also include the save file(s), any mods you may be using, and any steps you know of to reproduce the crash.
The game crashed unexpectedly. I am unable to pin it on a specific behavior.
I've attached the latest auto save file as well as the log. Only mod is the official space age expansion 2.0.23 (build 80769 expansion, win64). Let me know if you need anything more from me.