“There was a problem loading this world”

I received the exact same message on while trying to load world.  This started shortly after the most recent update to 1.16 when the MOJANG logo in red appeared on my screen and wouldn't go away.

After deleting Minecraft and reinstalling, turning power off, clearing cache, rebuilding - I was finally able to get the world to load.  However, once the world loads and I play for a while, exit normally,  and the game "saving game" screen appears.  Everything is seemingly normal... but when I want to play the world again and attempt to load it ... it takes a very long time on the loading screen (about 2 minutes) and then I get the message "There was a problem loading this world".   And I have no option but to click "ok" and return to the main menu.  This cycle repeats without being able to load my world.

A few times while loading the games crashes while trying to load up for the first time and I received the error code on PS4 CE-34878-0.

I am not sure if this is a PlayStation issue or a Minecraft Bedrock issues at this point.  

I have the world backed-up in the cloud and on USB - but will lose weeks of progress on the world if I have to revert to an earlier saved game.  Also, I fear this event will happen again unless it is resolve soon... I refused to lose hours of game play to a corrupted world, software, or firmware. 

Each time I have arduously reset the PS4, deleted the game, reloaded the game, cleared the cache, looked for corrupt files in settings and then loaded the back up copy of my world from the cloud or USB stick - I can actually play the world again.  BUT here is the  other issue... once I save and attempt to reload the world I get the same message "there was a problem loading this world" and of course I loose all of the improvements to the world, rinse, dry, and repeat...  I have done this about 3-4 times.  Not working.

My most recent back-up from June 29th didn't load, nor did my July 2nd, 2020 copy of the world.  Same message screen "There was a problem loading your world."  This issues is causing me to go insane.  I have decided to stop playing minecraft until this issue is adequately addressed and corrected.  It is driving me nuts!

There are a few smaller worlds that will load and work just fine.   30 MB to 60 MB worlds working fine v. the world I want to play at 1.3 GB (not loading). Please help.