Log:

+ /usr/lib/apt/apt.systemd.daily lock_is_held update                                                                                                                                                                                                                                        
--- Logging error ---                                                                                                                                                                                                                                                                       
Traceback (most recent call last):                                                                                                                                                                                                                                                          
  File "/usr/lib/python3.6/logging/__init__.py", line 996, in emit                                                                                                                                                                                                                          
    stream.write(msg)                                                                                                                                                                                                                                                                       
UnicodeEncodeError: 'ascii' codec can't encode characters in position 29-34: ordinal not in range(128)                                                                                                                                                                                      
Call stack:                                                                                                                                                                                                                                                                                 
  File "/usr/bin/unattended-upgrade", line 2193, in <module>                                                                                                                                                                                                                                
    sys.exit(main(options))                                                                                                                                                                                                                                                                 
  File "/usr/bin/unattended-upgrade", line 1750, in main                                                                                                                                                                                                                                    
    " ".join(blacklisted_pkgs))                                                                                                                                                                                                                                                             
Message: '\u041f\u0430\u043a\u0435\u0442\u044b \u0432 \u0447\u0451\u0440\u043d\u043e\u043c \u0441\u043f\u0438\u0441\u043a\u0435 \u0438\u0437\u043d\u0430\u0447\u0430\u043b\u044c\u043d\u043e: %s'                                                                                           
Arguments: ('',)                                                                                                                                                                                                                                                                            
--- Logging error ---                                                                                                                                                                                                                                                                       
Traceback (most recent call last):                                                                                                                                                                                                                                                          
  File "/usr/lib/python3.6/logging/__init__.py", line 996, in emit                                                                                                                                                                                                                          
    stream.write(msg)                                                                                                                                                                                                                                                                       
UnicodeEncodeError: 'ascii' codec can't encode characters in position 29-39: ordinal not in range(128)                                                                                                                                                                                      
Call stack:                                                                                                                                                                                                                                                                                 
  File "/usr/bin/unattended-upgrade", line 2193, in <module>                                                                                                                                                                                                                                
    sys.exit(main(options))                                                                                                                                                                                                                                                                 
  File "/usr/bin/unattended-upgrade", line 1757, in main                                                                                                                                                                                                                                    
    logging.info(_("Starting unattended upgrades script"))                                                                                                                                                                                                                                  
Message: '\u0417\u0430\u043f\u0443\u0441\u043a\u0430\u044e\u0442\u0441\u044f \u0441\u0446\u0435\u043d\u0430\u0440\u0438\u0438 \u043d\u0435\u043e\u0431\u0441\u043b\u0443\u0436\u0438\u0432\u0430\u0435\u043c\u043e\u0439 \u0443\u0441\u0442\u0430\u043d\u043e\u0432\u043a\u0438'            
Arguments: ()                                                                                                                                                                                                                                                                               
--- Logging error ---                                                                                                                                                                                                                                                                       
Traceback (most recent call last):                                                                                                                                                                                                                                                          
  File "/usr/lib/python3.6/logging/__init__.py", line 996, in emit                                                                                                                                                                                                                          
    stream.write(msg)                                                                                                                                                                                                                                                                       
UnicodeEncodeError: 'ascii' codec can't encode characters in position 29-39: ordinal not in range(128)                                                                                                                                                                                      
Call stack:                                                                                                                                                                                                                                                                                 
  File "/usr/bin/unattended-upgrade", line 2193, in <module>                                                                                                                                                                                                                                
    sys.exit(main(options))                                                                                                                                                                                                                                                                 
  File "/usr/bin/unattended-upgrade", line 1766, in main                                                                                                                                                                                                                                    
    logging.info(_("Allowed origins are: %s"), ", ".join(allowed_origins))                                                                                                                                                                                                                  
Message: '\u0420\u0430\u0437\u0440\u0435\u0448\u0451\u043d\u043d\u044b\u0435 \u0438\u0441\u0442\u043e\u0447\u043d\u0438\u043a\u0438: %s'                                                                                                                                                    
Arguments: ('o=Ubuntu,a=bionic, o=Ubuntu,a=bionic-security, o=UbuntuESMApps,a=bionic-apps-security, o=UbuntuESM,a=bionic-infra-security',)                                                                                                                                                  
+ exit 0