Error when training process ModuleNotFoundError: No module named 'mmdet'

[neni1705]

(mmdet) D:\BalancedGroupSoftmax>python tools/train.py configs/bags/gs_faster_rcnn_r50_fpn_1x_lvis_with0_bg8.py
Traceback (most recent call last):
File "tools/train.py", line 8, in
from mmdet import version
ModuleNotFoundError: No module named 'mmdet'

I got this error when I did the training, is there something wrong? I am looking forward for your repply

[Taoxianer]

请问你解决了吗，我也遇到了，应该怎么去解决呢

[neni1705]

I can't solve it.