In my experience with similar telegram bot frameworks, the error indicates that somewhere a function is being mistakenly used where a list or another iterable is expected. I encountered a similar glitch when a function prototype was used instead of its returned value. It would be worthwhile to check if create_menu is being called correctly and that it returns the intended list rather than referencing the function itself. Also, verify that no variable naming conflicts are shadowing your function’s definition. These subtle mistakes can often be the culprit in these scenarios.