tools.paws@jupyter-yuvipanda-test-account-44704412:~$ pwb.py login                                                                 
Traceback (most recent call last):                                                                                                 
  File "/srv/pwb/pwb.py", line 248, in <module>                                                                                    
    if not main():                                                                                                                 
  File "/srv/pwb/pwb.py", line 242, in main                                                                                        
    run_python_file(filename, [filename] + args, argvu, file_package)                                                              
  File "/srv/pwb/pwb.py", line 120, in run_python_file                                                                             
    main_mod.__dict__)                                                                                                             
  File "/srv/pwb/scripts/login.py", line 193, in <module>                                                                          
    main()                                                                                                                         
  File "/srv/pwb/scripts/login.py", line 176, in main                                                                              
    site.login(sysop)                                                                                                              
  File "/srv/pwb/pywikibot/site.py", line 2004, in login                                                                           
    if loginMan.login(retry=True):                                                                                                 
  File "/srv/pwb/pywikibot/login.py", line 265, in login                                                                           
    self.check_user_exists()                                                                                                       
  File "/srv/pwb/pywikibot/login.py", line 140, in check_user_exists                                                               
    % (self.username, self.site))                                                                                                  
pywikibot.exceptions.NoUsername: Username 'Yuvipanda-test-account' does not exist on wikipedia:test                                
<class 'pywikibot.exceptions.NoUsername'>                                                                                          
CRITICAL: Closing network session.