Every time I join ANY world, it says ERROR!

Im not sure which affected version it is

Simply saying “It is so annoying” is not at all helpful in diagnosing the issue. Please provide as much information as you can, including whether you are using any add-ons, whether it happens in a brand-new world with default settings and no add-ons, etc.

We need to be able to reproduce the issue to understand the cause. The best approach is to carefully follow all of the instructions on the reporting page.