Contributor fails to join the queue when he/she/it gets a 502

[zosorock]

I imagine it is in moments of high load, but if the Contributor gets a 502 it exits immediately and does not provide any clue to the user. I had to dig inside the container to find the error messages:
Sep 23 19:42:38.246 ERROR setup1_contributor::commands::contribute: Failed to join the queue, error: HTTP status server error (502 Bad Gateway) for url (https://outer-ceremony.aleo.org/v1/queue/contributor/join) Sep 23 19:42:38.249 INFO setup1_contributor::commands::contribute: Error occurred during contribution: Failed to join the queue, error: HTTP status server error (502 Bad Gateway) for url (https://outer-ceremony.aleo.org/v1/queue/contributor/join)
We should at least handle and print some information. At a minimum, we should suggest that the contributor has to run the command again.