A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
You haven't included macOS & Office Version Numbers so it can't be confirmed but if a simple restart of the Mac doesn't resolve it the most common cause of such misbehavior is a need for updates to either or both. If you provide those significant bits of information they can be verified.
Is the error report generated by the OS or by Microsoft Error Reporting [MERP]? If you choose to include it only the first ~20 lines are needed. Don't try to include the entire extensive report intended for software engineers with diagnostic systems.