1. loading, saving, auto save,

2. An unexpected error occurred while loading the file.
See video and screenshots.

3. It loads and the game runs.
It is saved and the game ends.
If an error occurs during saving or auto-saving, the playing time is lost.

4. If an error occurs, you cannot play the ...

Continuous occurrence of unexpected errors. In the error message, I wrote a post asking for help by uploading a log file to the Factorio forum.

*I used a translator.