Pickup slots are crashing with error 500 every time a BIEB accepts or declines a foodsaver

Summary

(As stated in https://yunity.slack.com/archives/C1T1ZM9A4/p1570724599038400 ) Pickup slots are crashing with error 500 every time a BIEB accepts or declines a foodsaver. The transaction is still working anyway. public issue: https://sentry.io/share/issue/1d57fb000920492d88260fc7457c62b1/

Screenshot:

Steps to reproduce

It happens, when you accept or decline a foodsaver in a store-pickup-slot. Couldn't reproduce locally.

What is the current bug behavior?

An error message ('confirm failed') appears but the transaction goes through.

What is the expected correct behavior?

No error message if the transaction goes through.

Possible fixes

Yet unknown.