TypeError: can't convert NoneType to int · Issue #44 · adafruit/Adafruit_CircuitPython_BusDevice · GitHub
What does 'int() argument must be a string, a bytes like object or a number, not 'NoneType'. Error saving date' mean (python 3, Django form, datetime, development)? - Quora
![arcpy - How can I fix the ArcToolbox error TypeError: cannot concatenate 'str' and 'NoneType' objects? - Geographic Information Systems Stack Exchange arcpy - How can I fix the ArcToolbox error TypeError: cannot concatenate 'str' and 'NoneType' objects? - Geographic Information Systems Stack Exchange](https://i.stack.imgur.com/Ntfg9.png)