[Python] "SpecNotFound: Invalid name, try the format: user/package" in Creating new Conda env...

I'm trying to Create New conda environment by 'Anaconda Prompt' usnig yml File in Windows 10.
So here is the steps i made through:

1. using cd command i changed the directory to dir which my yml file located. (suppose my yml file is in c:/Users/<USER NAME>/.jupyter )
2. Then i used conda env create -f Python 310.yml command to create new conda env.

and what i got is:

SpecNotFound: Invalid name, try the format: user/package
​

Now I don't know how can I solve this problem and exactly what is the meaning of this error.

Appendix


my Python 310.yml file contains these stuff:



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