Shovel HTTP API: GET /api/shovels/vhost/{vhost}/{name} returns 500 error for names that do not exist

[nesonger]

I installed RabbitMQ 3.13.7 and was testing the shovel HTTP API: GET /api/shovels/vhost/{vhost}/{name} and noticed that when the shovel name does not exist, I am getting a 500 error instead of the expected 404 or 400 error.

errorFromLog.pdf

[SimonUnge]

Should probably be an 'issue' and not a discussion. Regardless, easy fix, I'll create a PR.

(FYI @michaelklishin)

[michaelklishin]

#12172