Traceback (most recent call last):
File "gui.py", line 885, in <module>
File "gui.py", line 827, in run
AttributeError: 'NoneType' object has no attribute 'calc_local_offset'
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "gui.py", line 896, in <module>
NameError: name 'exit' is not defined
im getting this error, what should i do?