Error in Blender file

Sometimes im getting an error like this . (It isn’t about coding or scripting it just appears when i hit crtl z or unwrap uv i don’t even understand what it says or what it says . Also i couldnt find any subjects about this so this came to me closest subject)

Try updating blnder to the latest stable version. If that doesn’t help, press “help - report a bug” and compose a bugreport

I can’t update it. I need 2.8 version