Greetings ApocalypseApostle!
Thank you for reaching out to us.
In order for us to properly assess your issue, could you please send us a screenshot of the Fatal Error window please?
Additionally, have you perhaps attempted to delete your single player files? We’ve received reports from players with similar issues, claiming that after removing a problematic file in their single player game files, the Fatal Error stopped occurring.
You can find these files in:
\Conan Exiles\ConanSandbox\Saved
Let us know if this has solved the issue please.