If you experienced a crash, please try clearing the cache as instructed below:
- Turn off PlayStation 4. Do not enter Rest Mode.
- Once the indicator light on top of your PlayStation 4 is off and has stopped blinking, unplug the power cable from the back of the console.
- Wait minimum 30 seconds.
- Plug the power cable back into PlayStation 4, turn the console on and see if the issue still occurs.
This will perform a hard reset of the system, afterwards please check if the issue still occurs. If that sole procedure won't help, please check if loading an earlier gamesave proves helpful.