Diablo 4 is currently in beta so it’s going to have issues, but if one of the issues is Diablo 4 crashing, freezing, or not starting then there are a few things that you can do to fix this. I have put together a list of different solutions that you can use to troubleshoot and fix the Diablo 4 game on a PS4 or PS5.
How To Fix Diablo 4 Crashing On PlayStation
Close the game
If the game for some reason has frozen or not responding and you have left it for at least 5 minutes, then the first and one of the easier methods is to just close the game. Now open it again, by doing this you will be forcing the game to reload everything from scratch.
Restart PlayStation
Again similar to closing down Diablo the next thing to try is to simply restart your console, it could just be a service or something on your PlayStation that has become glitched/stuck. So restarting will help resolve this and then help fix Diablo 4.
Update PlayStation system
When was the last time you manually checked to see if there are any new system updates available? it’s probably been a while, so go ahead and ensure you have the latest version installed. If you don’t then install it as it could fix a known bug that causes game crashing issues.
PS4:
Open Settings and go to System Software
Then select Update to check for PlayStation 4 updates
PS5:
Open Settings and then select System
Go to System Software and then you will need to select System Software Update and Settings
Select Update System Software to check for updates

Clear cache
If your system cache has encountered a problem, then this could cause problems with the game. Luckily we can easily clear the cache for a PlayStation.
PS4:
Completely power off your console > Unplug the power cable
Now leave your PS4 for at least 60 seconds
You can now Plug the power cable back in and turn the console back on
PS5:
Completely power off your PS5 console and then you will need to boot your PS5 in Safe Mode (Press and hold the power button and let go when you hear the second beep)
Click on the Clear Cache and Rebuild Database option
Choose Clear System Software cache and press OK

Rebuild database
Every PlayStation has a database and this is where the information is stored for your console, sometimes the database needs to be rebuilt in order to resolve issues.
Power off your PlayStation
Boot into safe mode by pressing and holding the power button until the second beep
On a PS4 select Rebuild Database
On a PS5 select Clear Cache and Rebuild Database and then Rebuild Database

Reinstall
If one of the game’s installation files has become corrupted during the installation of the game or during an update, then this is going to cause the game to stop launching. Unlike a PC the only way of fixing this on a console is to reinstall the game. If you do have Diablo 4 installed onto an external drive, reinstall it to the internal drive.
Conclusion
So as you can see there are a few things that you can do to fix the Diablo 4 game crashing on a PlayStation, and the solutions are not too difficult. There is no need to take apart your console or get it repaired as it’s usually just an easy fix. I hope one of the above methods helped get the game working again, and you can now enjoy exploring the game with your favorite class.