Traceback (most recent call last):
File "budget.py", line 162, in
balance_result = balance.show(balance.criteria)
File "app/libraries/classes.py", line 579, in show
balance = incomes - bills
TypeError: unsupported operand type(s) for -: 'NoneType' and 'NoneType'
Traceback (most recent call last):
File "budget.py", line 162, in <module>
balance_result = balance.show(balance.criteria)
File "app/libraries/classes.py", line 579, in show
balance = incomes - bills
TypeError: unsupported operand type(s) for -: 'NoneType' and 'NoneType'