Step 7, right?
One possibility is the link that maskphish generated might be broken so it does not fetch data as this package works on is.gd service has a cap of 5-6 limits so make sure you do not use same link more than 5 times.
It is also possible that the url generated by zphisher might be broken so make sure both works properly
If this doesn't works, try updating the zphisher and maskphish package along with version list of your kali machine!