Unhandled exceptions in IOService leads to different issues across the system. See examples: JBPM-9110 and JBPM-8828

I suggest there handled exception like java.io.FileNotFoundException or even replace FileSystemNotFoundException. To force handle missing files across the Business Central and it should automatically fix all similar remaining issues as JBPM-9110 and JBPM-8828.

At least for mentioned issues and the similar issue, FileNotFound makes more sense to me. Also, it will help as to reevaluate usage of this method over the whole system and help to fix other issues with .niogit if any.