unsupported operand type(s) for /: 'NoneType' and 'float'

This error occurs when you try to perform division between a NoneType object and a float. NoneType is a special type in Python that represents the absence of a value. It is often used to indicate that a function or method did not return anything.

To fix this error, you need to ensure that the operands being used in the division operation are of the correct data type. Check that the variable on the left-hand side of the division operator is not None or that it has a valid value.

If the variable is supposed to have a value but is None, you may need to check the code that sets the value of the variable and make sure it is being initialized correctly.