IMO, try reinstall urllib3 (1.24.1) to urllib3 with 1.24.3 version
Do you use Debian 10, Debian Testing (Bullseye), Debian Sid or Debian at all when you made your statement?
No, I don't, it just my opinion. As I know Debian 10 use Phyton 3.7 version with can be found with detail
here