PS5 not installing PS4 disc?

I’ve tried to install diablo 3 onto the PS5 and it won’t do it. I get up to the playable stage, installed the latest version but on the actual full installation, it won’t install. It says Can’t install - error - CE - 100005-6.

I’ve looked online to see what it could be or is and there is no fix for this. I was wondering if anyone here might be able to help?

Hello there BahamutFury!

We only give direct support to the PC versions of our games. For this issue, you would need to contact Sony. You can do this from here.

Best of lucks in your journeys!