The used idna-ssl version referenced in requirements.txt is outdated:
Could not find a version that satisfies the requirement idna-ssl==1.0.1 (from -r requirements.txt (line 16)) (from versions: 0.0.1, 0.0.2, 1.0.0, 1.1.0)
No matching distribution found for idna-ssl==1.0.1 (from -r requirements.txt (line 16))
The used idna-ssl version referenced in requirements.txt is outdated:
Please use a newer version e.g.
idna-ssl==1.1.0