adding entry for transport

[brucewzj99]

Describe the bug
error shown when clicking on payment type when adding a transport entry via /addentry on a new day, need to test if it's occurring in other situation

To Reproduce
Steps to reproduce the behavior:

1. /addentry
2. transport
3. enter price
4. enter description
5. click type
6. click payment
7. see error

Expected behavior
A smooth process flow where the transaction is logged