Docker update hangs when checking for new discourse version

Product Support Self-hosting
3

Why yes there is:

GET https://discourse.example.org/admin/docker/latest?path=%2Fvar%2Fwww%2Fdiscourse&version=1689f43&branch=origin%2Ftests-passed 502 (OK)
Error: OK
    at o (docker-manager-vendor-f00ab2e603ce2bef5677d6dc04bfa72a.js:11)
    at Object.e.default.trigger (docker-manager-vendor-f00ab2e603ce2bef5677d6dc04bfa72a.js:16)
    at h._onerror (docker-manager-vendor-f00ab2e603ce2bef5677d6dc04bfa72a.js:16)
    at d (docker-manager-vendor-f00ab2e603ce2bef5677d6dc04bfa72a.js:16)
    at docker-manager-vendor-f00ab2e603ce2bef5677d6dc04bfa72a.js:11
    at r.invoke (docker-manager-vendor-f00ab2e603ce2bef5677d6dc04bfa72a.js:4)
    at Object.r.flush (docker-manager-vendor-f00ab2e603ce2bef5677d6dc04bfa72a.js:4)
    at Object.n.flush (docker-manager-vendor-f00ab2e603ce2bef5677d6dc04bfa72a.js:4)
    at Object.a.end (docker-manager-vendor-f00ab2e603ce2bef5677d6dc04bfa72a.js:4)
    at Object.a.run (docker-manager-vendor-f00ab2e603ce2bef5677d6dc04bfa72a.js:4)