Cause of server crash

The server crashes because it tries to convert the HTTP version from string to float.

OS: macOS Catalina version 10.15.5

To set up the environment needed follow the guide described in READ.me To recreate the crash replace GET / HTTP/1.1 with either

GET / HTTP/9999999999999999999999999999

or

GET / HTTP/a (or any other character not a number)

Backtrace: click here