can't save game

Hello,

after latest update of Minecraft I'm not able to save the game sucessuflly anymore.

I have a backup version I'm able to launch - it works and I can play, but as soon as I quit and save I'm then not able to open it again. I only gete the message "there is a problem with this world"

 

I've tried many things : re-installing the game, turning off the ps4 etc.. but always the same result: after I save, can't open it anymore - can you please help?

thanks

G.