Can’t copy worlds - copying stuck at 40%

I seem to be having an issue with copying my world to back it up……I’ve attached a picture to show what happens when I try to back up a world….so I go to my world then go into the tab with the pencil for options for my world. Then in that menu for my world called achievement world I scroll down to bottom where it has copy world. I click that and it starts to load that it is copying my world and jumps to 40% Almost instantly then seems to do nothing else. I have added extra photos to show where exactly I go in menu to copy my world…. Hope this helps as video showing what I do dosnt seem to wanna upload here so hopefully pictures will show what I’m trying to explain about when I say copy world (still a issue as of 16/12/22