502 Server Error when opening restaurant "Chick King"

Describe the bug
When attempting to open the restaurant detail page for "Chick King", the app throws a 502 server error (ApolloError / ServerError). The error message indicates that the application failed to respond, and no restaurant details are loaded.

To Reproduce
Steps to reproduce the behavior:

Launch the app.
Search for or select the restaurant "Chick King" from the restaurant list.
Wait for the details to load.
Expected behavior
Restaurant details for "Chick King" should load successfully without any server errors.

Desktop (please complete the following information):

OS: [e.g. iOS]
Browser [e.g. chrome, safari]
Version [e.g. 22]
Smartphone (please complete the following information):

Device: [e.g. iPhone6]
OS: [e.g. iOS8.1]
Browser [e.g. stock browser, safari]
Version [e.g. 22]

Labels: Enatega Multivendor Customer App, Bug

Start by reproducing the restaurant-detail request for "Chick King" and inspect the ApolloError/ServerError response that produces the 502. Trace that request through the TypeScript backend to identify where the restaurant lookup fails. Done means the details load successfully for this restaurant without a server error, with a regression check for the failing case.

Written by the indexing model from the issue text.