I submitted a new DST, then realized it needed an edit. I edited & saved the DST, then, not being sure if the edit would be part of the earlier DST submission, resubmitted. I got a 500 "Server Error" response to the form submission. I can't be certain the error is reproducible by the following steps, but it's my best guess as to how to do so.
To assist in debugging, here are reconstructions of the browser request & server response:
POST https://www.obsidianportal.com/dynamic_sheet_templates/491/submit HTTP/2
access-control-allow-methods: GET, POST, OPTIONS
content-type: text/html; charset=utf-8
date: Sun, 04 Sep 2022 05:30:07 GMT
set-cookie: AWSALB=XXXXXXXX; Expires=Sun, 11 Sep 2022 05:30:06 GMT; Path=/
set-cookie: AWSALBCORS=XXXXXXXX; Expires=Sun, 11 Sep 2022 05:30:06 GMT; Path=/; SameSite=None; Secure
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