Crash while copying world

When I try to copy a world, my game crash

It seems to happen only on 90MB world or much because I can copy 30MB, 60MB worlds.

Whenever I try to copy this world my game do 40% of the copy and crash.

This bug is not recent: it has been several months since I have copied a world of more than 90MB without crashing

Help me please !

(I'm french so the screen is in french)