Bug that makes playing impossible.

So while playing before the 1.16.100 update I was playing myself on my private world. When the update came I went to play that same world that has too much progress for it to be considered being in a world so I had internet connection and when I was setting up the world it said Unable to Connect to world. Please check your connection to the internet and try again. So i thought that’s weird, I’ll restart Minecraft. After restarting I tried it again it said the same “Unable to connect to world. Please check your connection to the internet and try again”. I restarted it again then it said again, look this may be stupid but fix this because this could happen to more people and make them quit your game. I’m just concerned about your game because more people can be affected by this and it could make them go crazy and probably reduce MOJANG’S income for money and could possibly make more and more people quit making Minecraft from high popularity to almost low popularity in bedrock edition.
Thank you if you are also concerned and want to try to fix this and please fix this bug.