Decompress world bug

Hello I’m Have a mobile console and I keep getting this error. could not world “”: Failed to decompress level.dat contents (probably corrupted). I have delete the world and reinstalling and somehow works. But after a while it doesn’t wanna work anymore. Any solution I am in IPad.

 

Where is the world file from?
Current PMMP doesn't support java worlds from 1.13+

 

Strange because even when I use the worlds from MulitWorld plugin they don’t work too same message

 

So what can I do to Lower it? And if I do it will it work?
i have checked the other people experience the same thing and I don’t understand what is happening

 

I know freeing up it but like in what way specifically. I don’t want to risk deleting my worlds