I just erased my entire system then I downloaded two games including Minecraft Bedrock Edition PS4 I then try to download a world from the Marketplace and it says I do not have enough memory.
Then I tried uploading a world to realms which is online not on my system but it says something like your memory is full you might not have enough room on your hard drive.
As far as I know my system is not the internet and my hard drive is not the internet but that's not the only thing that's going on with PS4 Minecraft Bedrock Edition.
Just check the YouTube video blow.
https://youtu.be/sRE2jZFMyeI