The URL must not be empty

Trying to run:

`pylinkvalidate.py -P "https://eai.company/"`
or 
`pylinkvalidate.py -P "https://enlightenment.ai/"`

results in a:
`The URL must not be empty: https://eai.company/` or 
`The URL must not be empty: https://enlightenment.ai/`

I'm not sure what is happening. It says the URL is empty, but it only happens with some domains for some reason.