Fix for 500 error

[codecov[bot]]

Codecov Report

Patch coverage: 70.00% and project coverage change: -2.54% :warning:

Comparison is base (573297d) 99.05% compared to head (45cd4ea) 96.52%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #162 +/- ## ========================================== - Coverage 99.05% 96.52% -2.54% ========================================== Files 8 8 Lines 423 460 +37 ========================================== + Hits 419 444 +25 - Misses 4 16 +12 ``` | [Files Changed](https://app.codecov.io/gh/CSCI-GA-2820-SU23-001/shopcarts/pull/162?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=CSCI-GA-2820-SU23-001) | Coverage Δ | | |---|---|---| | [service/common/error\_handlers.py](https://app.codecov.io/gh/CSCI-GA-2820-SU23-001/shopcarts/pull/162?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=CSCI-GA-2820-SU23-001#diff-c2VydmljZS9jb21tb24vZXJyb3JfaGFuZGxlcnMucHk=) | `63.63% <42.85%> (-36.37%)` | :arrow_down: | | [service/routes.py](https://app.codecov.io/gh/CSCI-GA-2820-SU23-001/shopcarts/pull/162?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=CSCI-GA-2820-SU23-001#diff-c2VydmljZS9yb3V0ZXMucHk=) | `100.00% <100.00%> (ø)` | |

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.