502 error after editing an object

[DonRichards]

After importing an object via migration_islandora_csv I attempted to edit an object. After doing so I get an empty manifest and a 500 error on the object's page.

Manifest

{
  "@type": "sc:Manifest",
  "@id": "http://islandora-isle-dc-12-34-56-78.traefik.me/node/839/manifest",
  "label": "IIIF Manifest",
  "@context": "http://iiif.io/api/presentation/2/context.json",
  "sequences": [{
    "@context": "http://iiif.io/api/presentation/2/context.json",
    "@id": "http://islandora-isle-dc-12-34-56-78.traefik.me/node/839/sequence/normal",
    "@type": "sc:Sequence"
  }]
}

Something interesting I saw in watchdog. 2 calls but one called the traefik.me URL and the other localhost.

openseadragon Request for IIIF manifest at https://islandora-isle-dc-12-34-56-78.traefik.me/node/840/manifest returned 0 openseadragon Request for IIIF manifest at http://localhost:8000/node/840/manifest returned 0

[DonRichards]

I'm thinking either a routing issue or a form validation issue.

[DonRichards]

Narrowing it down. This error appears when I add an "Physical Form" to the form.

[DonRichards]

I'm also seeing it with Geographic Subject & Subjects (name). These are all complete fields. Not sure how it relates

[DonRichards]

So I think I've narrowed it down a little further. When I reference a taxonomy term I just created the error happens.

[DonRichards]

Tested this on future.islandora.ca and it works fine but not on a fresh isle-dc build.