I am using frappe , erp next , and redis cache , i developed an override method which already exists in the original healthcare module, i make an indicator in hooks to indicate to the new method instead of original one , the new method has been working fine for 1 month , and the results was as expected , suddenly , the system starts to make something confusing me , ones execute the original method , and ones executes the new method , what the expected problem in this situation ? and what shall i do to solve it ?