Remove Tool not working v27.6

Hi I am Running PS version 27.6 on my mac and the remove tool is not working.

My operating system is MAC O.S. 13.7.8

Initially I got the message i need to update to OS 14 but my mac is unable to update to that.

Steps I have already taken: 

Uninstalling PS via creative cloud and re-installing

Changed in Preferences  > remove tool preferences to more stable

Is there any way to work around or fix this?

Thanks.