This error occurs when you try to access an attribute named "SCREENSIZE" from the module named "cfg", but the module does not have any attribute named "SCREENSIZE".
To fix this error, you need to make sure that the "SCREENSIZE" attribute is defined and imported correctly in the "cfg" module. Check the spelling and case sensitivity of the attribute name. Also, make sure that the module is imported correctly and that you are referencing the attribute using the correct syntax, such as "cfg.SCREENSIZE".