Mac Pro message "Word document could not be saved due to file permission issues"

Hello everyone, today I encountered an issue on my Mac. When I attempted to save a Word document, an error message appeared saying that the document with the name "#1" could not be saved as another document with the name "#2" already existed. Can anyone help me resolve this problem?

Another issue:

There was an error message saying that the Word document could not be saved due to file permission issues on Mac. I will also provide screenshots to help clarify the issue.

Thanks in advance

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