Operation(s) not permitted

Hey there JayMiller3,

It sounds like you're unable to access a Numbers files as expected in macOS.

Just to confirm, is this a file being collaborated on using iCloud with other people?

Have you tried restarting your Mac to see if that helps?

Can you test the issue while in safe mode? Take a look at the steps listed below. Keep us updated.

Start up your Mac in safe mode

If you don’t have permission to use files on a Mac disk

Regards.

I just noticed you are the same person who had this same problem in April. The link I posted was to your question. Is this the exact same file with the exact same problem and it never got straightened out?

How about going into System Preferences/Security&Privacy/Privacy and scrolling down to where you see Full Disk Access and then add Numbers to the list. I don't recall if MacOS 10 has these same settings as 11 does. Numbers is not on that list for me, but it is on the list of Files and Folders with access to removable volumes.

Someone in April posted the same error and the advice given was to reboot the computer. The person never reported back whether it worked or not so we don't know if that was the solution or not.

https://discussions.apple.com/thread/252687504

I am wondering where this advice you were following came from. Who or what told you you could not save a file to a specific folder on your hard drive? Who or what told you to go to Finder and move the file (the one you could not save) to iCloud? Who or what told you you do not have permission to move it to iCloud? At first I was assuming these were error messages from your computer but the wording you used in your post doesn't sound like the text used in error messages.

The permissions you see are just like what I have. I don't think that is the problem. If you click the lock and put in your password it should let you make the change you were looking to make.

The preview image should not be a folder, it should be of a spreadsheet. That may be a clue. The size of the file (which I do not know) may be another clue. It should be upward of around 100KB.

I am not the best person to help you with this. I don't know the answer to the problem and I will bombard you with questions trying to figure out exactly what the chain of events were that got you to where you are now and a bunch of other questions in an attempt to figure out what is wrong and how to fix it, if it can be fixed.

Unless someone has a quick answer to the problem, and I hope someone does, it is likely you will spend more than the two hours it would take to just recreate the document. I recommend starting over but saving early, like right at the start, to make sure it saves correctly this time. If you continue to have the same problem, though, we'll be back to trying to figure it out.