Stuck at step 10, No module named 'object_detection'

[sunnuD]

Traceback (most recent call last):
File "model_builder_tf2_test.py", line 25, in
from object_detection.builders import model_builder
ModuleNotFoundError: No module named 'object_detection'
Done

i have checked the xml files, label_map.pbtxt and generate_tfrecord.py all are present and i have also modified the pbxt file to one id only
as i am only using one dataset

[AlArths]

I have the same issue

[Noonlord]

I am guessing that you changed the runtime and forgot to run setup.py / build.py again.

(Yes, really old issue but I hope it helps someone!)