CondaValueError: invalid package specification: name: rbp-maps

[J9DM]

I ran the following commands, as suggested for installation:
git clone https://github.com/yeolab/rbp-maps cd rbp-maps; conda env create -f conda_env.txt -n rbp-maps
But received the following error message:
CondaValueError: invalid package specification: name: rbp-maps

In conda_env.txt, the line that causes the error is attempting a pip installation of rbp-maps==0.0.6, I believe.