Requests.exceptions.InvalidHeader:Invalid return character or leading spaces in header resolution

According to the exception description of the problem is the request header is invalid

But that's what my request head is.

"Host": "Www.vbprofiles.com",

"If-none-match": "83FB3078DFD8FF27CE838177B480B9FD",

"Referer": "https://www.vbprofiles.com/companies/airbnb-4e419a34091eb05bba00002c"

This is clearly effective, and then I went online to check the data did not find, just look at the python source

As shown in Python, the value is on the line. This exception was thrown, so the value is not correct because there is a space in front of my value.