You're looking at StableBuild's Deleted PyPI mirror - where we index all deleted packages from the Python package registry.

graphscope-client
0.28.0a20240718

This version was deleted from PyPI around 2024-08-06. Installing fails with:
$ pip3 install graphscope-client==0.28.0a20240718 ERROR: Could not find a version that satisfies the requirement graphscope-client==0.28.0a20240718