MMCV==1.7.0 is used but incompatible. Please install mmcv>=2.0.0rc4, <2.1.0.

[msimulation]

I try to install MMCV on a ubunutu.
-> mim list:
mmcv 1.7.0 https://github.com/open-mmlab/mmcv
mmdet 3.0.0 /home/user/mmdetection
mmengine 0.7.4 /home/user/mmengine
mmocr 0.6.1 https://github.com/open-mmlab/mmocr

When I import mmcv in python, I get this error:
MMCV==1.7.0 is used but incompatible. Please install mmcv>=2.0.0rc4, <2.1.0.

When I install mmcv 2.0.0rc4, I get this error:
MMCV 2.0.0rc4 is incompatible with MMOCR 0.6.1. Please use MMCV >= 1.3.8, <= 1.7.0 instead.

mmcv 2.0.0rc4 https://github.com/open-mmlab/mmcv
mmdet 3.0.0 /home/user/mmdetection
mmengine 0.7.4 /home/user/mmengine
mmocr 0.6.1 https://github.com/open-mmlab/mmocr

Can someone help me how to get out of that circle and what could be the problem ? Thanks so much !!!

[msimulation]

problem found, had two mmcv installations in the virtual env.