[TIMOB-25608] 502 Bad Gateway seen when building to iOS Simulator

*Description* When building to iOS simulator, I sometimes see a "502 Bad Gateway" error. It does not appear to affect the functionality of the app. Also, it does not appear to be easy to reproduce. *Steps to reproduce* 1. Create a new default classic app. Enable services including Test and Hyperloop. 2. Replace the app.js with the one attached to this ticket. I do not believe it is related to the contents in the attached app. However the error was observed when I was testing that app. 3. Build to an iOS Simulator. I tried with iPhone X, 8, and 7 Plus and can reproduce on all three. Also reproducible when testing on the CLI:

appc run -p ios -T simulator

*Actual Results* 1. App appears to run okay. However, on the console, after the app is launched, an error is seen "502 Bad Gateway". *Expected Results* 1. No error should be seen on the console.