FILE NOT FOUND ERROR

Hello! I am having problems with my photoshop because it keeps saying file was not found in almost all of my files! But they are perfectly fine when I open them in my computer. Basically photoshop can't seem to read all of my files.  

I already uninstalled and re-installed photoshop. Also restarted my iMac just to make sure but it's still showing the same error. Please help me because this is very important for my work..... I am paying for photoshop so this has to be fixed please.