

Try enabling add-ins one by one until you find the one that is causing this. And open the file? Can you open the file without any issue? If so, then, one of the add-ins is causing this. See this article if you cannot open Pages files.

Click Pages (Word), Numbers (Excel), or Keynote (PowerPoint), depending on the type of the file.If you are having this problem with only certain files, you may try the following workaround. Simply open an Office app and go to Help > Check for Updates. You can update your Mac by going to System Preferences > Software Update. Ensure that your Mac has the latest version of macOS.Test your problem in Safe Mode and then exit Safe Mode and test your problem again.

