In Photoshop 27.7, the Luminar Neo plug-in, which appears correctly in the Filters panel, does not open and reports "The command 'Luminar Neo' could not be completed because the file was not found. How can this be?"

This is the USING THE COMMUNITY forum... this is where the forum is discussed
This is not where you ask program or account questions
Moving a message to the correct forum is not working
Start here https://community.adobe.com/community and find the correct forum for your question

Post in the Photoshop forum (change title slightly to avoid dup post error): https://community.adobe.com/p/photoshop

And if that plug-in is from a 3rd-party then contact its manufacturer.