MacBook – Issue with Microsoft Word on Mac

Hopefully, this is the right site for this. I am using a 2020 MacBook Pro and Word 2016. I am having issues opening a document sent by a friend. He is able to open it, and this problem does not occur when I try to open files that originated on my computer. When I try to open the document, I get the following error message:

Word experienced an error trying to open the file.
Try these suggestions.
* Check the file permissions for the document or drive.
* Make sure there is sufficient free memory and disk space.
* Open the file with the Text Recovery converter.

To resolve this, I tried having my friend paste the contents of the document into a new document, but I also wasn't able to open that file. Here's what I tried regarding the specific suggestions.

Check the file permissions for the document or drive.

I checked and the file is totally accessible, read-write enabled, Word has access to the folder it's in (just the Desktop), etc.

Make sure there is sufficient free memory and disk space.

I just got a new computer and have 1.88 terabytes of space left, so definitely not a problem here.

Open the file with the Text Recovery converter.

In Word, I went to File>Open and selected the document. In the bottom-right corner of the window, I went to the drop-down that said "Open Original" and instead selected "Open Recover Text." The file it produced is blank except for the words "Error serving file." I also tried the "Open Repair" option in the drop-down menu, but that gave the same error as before.

Something else that might be relevant is that the files were sent through Slack, and the Slack preview worked on the document, but the Mac QuickLook preview does not work on the document (it just shows the document icon instead of a preview of the contents).

Any help would be greatly appreciated. Thanks!