TypeError: cannot unpack non-iterable NoneType object

This error occurs when you try to unpack a variable that is of type NoneType, which means the variable has no value or is empty.

For example, suppose you have a function that returns a tuple of values, but the function returns None instead of a tuple. If you try to unpack the returned value into variables, you will get this error.

To fix this error, you need to ensure that the variable you are trying to unpack is not None. You can do this by adding a condition to check if the variable is None before trying to unpack it.

For example:

result = my_function()
if result is not None:
    a, b, c = result
else:
    # handle the case where the function returned None

In this code, we first check if the result is not None before trying to unpack it into variables a, b, and c. If the result is None, we can handle the case accordingly.