URGENT: Deleting classrooms and members is broken

[jeffclemenswrdsb]

I cannot delete either classrooms or members.  Chrome's Developer Tools shows a "502 Bad Gateway" so I believe this is a bug.

To reproduce:

• Visit https://create.arduino.cc/plans/chrome-app/settings/members
• Check the circle beside a member's name in the "## Active Members" section .
• Click "DELETE" in the green box that appears.
• Click "DELETE" in the "DELETE SELECTED ACTIVE MEMBER/S" popup that appears.

Expected behaviour:

• The member is deleted from the list.

Actual behaviour:

• The member stays in the list.
• The popup closes but the green box stays.

Environment:

• Chrome ("Version 71.0.3578.98 (Official Build) (32-bit)")

[jeffclemenswrdsb]

The behaviour is similar when attempting to delete a team via https://create.arduino.cc/plans/chrome-app/settings/teams .  In that case, it shows a yellow box containing the text "An error occurred, please try again".

This is the request that 502's:
https://auth.arduino.cc/v1/organizations/mine/teams/(Some-Letters-Numbers-And-Dashes)/members

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