ERROR: Cannot install -r requirement.txt (line 35), -r requirement.txt (line 39) and protobuf==3.20.0 because these package versions have conflicting dependencies.

[xc-chen3]

INFO: pip is looking at multiple versions of tensorflow to determine which version is compatible with other requirements. This could take a while.
ERROR: Cannot install -r requirement.txt (line 35), -r requirement.txt (line 39) and protobuf==3.20.0 because these package versions have conflicting dependencies.

The conflict is caused by:
The user requested protobuf==3.20.0
tensorboardx 2.6.2 depends on protobuf
tensorflow 2.7.4 depends on protobuf<3.20 and >=3.9.2

To fix this you could try to:

1. loosen the range of package versions you've specified
2. remove package versions to allow pip to attempt to solve the dependency conflict

ERROR: ResolutionImpossible: for help visit https://pip.pypa.io/en/latest/topics/dependency-resolution/#dealing-with-dependency-conflicts

[xc-chen3]

$ python --version
Python 3.9.20