KeyError: 'classes_mean'

[jiangyijin]

When I run the measure_osrdetector.py, there's an error called 'KeyError: 'classes_mean'' when loading the ckpt. I'm wondering what's the meaning of the ckpt key 'classes_mean' and how can I get it.

In def main():
classes_mean = ckpt['classes_mean']
Traceback (most recent call last):
File "/snap/pycharm-community/425/plugins/python-ce/helpers/pydev/_pydevd_bundle/pydevd_exec2.py", line 3, in Exec
exec(exp, global_vars, local_vars)
File "", line 1, in
KeyError: 'classes_mean'