WORKAROUND FOUND: I have found a simple workaround for this bug.
Turn Wi-Fi off.
Launch Minecraft.
Turn Wi-Fi back on.
You will be able to play worlds and servers again.
This may not work for you.
The name sounds like some of the maps I download's zip file.
Not even using Android, my device is iOS
Same issue
WORKAROUND FOUND: I have found a simple workaround for this bug.
Turn Wi-Fi off.
Launch Minecraft.
Turn Wi-Fi back on.
You will be able to play worlds and servers again.
This may not work for you.