Openhab-addons: [REST API] cannot access web interface in 2.4.0.M7

[mattnl]

When accessing the REST API (http://10.100.100.210:8081/doc/index.html) through a web browser with the 2.4.0.M7 build, I just get the following message:

fetching resource list: http://10.100.100.210:8081/rest/swagger.json; Please wait.

but nothing happens. I just did a clean install of the M7 build, same effect. My default port is set to 8081.

misc-restdocs - 2.4.0.M7 is installed.

Chrome dev tools show:

swagger-ui.min.js:3 Uncaught TypeError: Cannot read property '$ref' of undefined
    at t.exports.a.resolveTo (swagger-ui.min.js:3)
    at t.exports.a.resolveTo (swagger-ui.min.js:3)
    at t.exports.a.resolve (swagger-ui.min.js:2)
    at response (swagger-ui.min.js:2)
    at i (swagger-ui.min.js:2)
    at e.on.response (swagger-ui.min.js:2)
    at swagger-ui.min.js:2
    at f.callback (swagger-ui.min.js:13)
    at f.<anonymous> (swagger-ui.min.js:13)
    at f.r.emit (swagger-ui.min.js:13)

Please see also the community forum:
https://community.openhab.org/t/oh-2-4-0-m7-testing-results/58475/25

[kaikreuzer]

Sounds similar to https://github.com/swagger-api/swagger-ui/issues/1677.
I have no clue, what has changed and when it last worked, though.

Anybody willing to look into it?

[AngelosF]

I checked 2.4.0.M6 and it works there.
I haven't checked which snapshot build introduced this issue.
S1445 & S1447 have the same issue

I will try to identify the root-cause and report back with my findings

[kaikreuzer]

Thanks. My best guess would be that it is related to https://github.com/openhab/openhab-core/pull/435 as this now prevents the rest/swagger bundles to be completely restarted.

[AngelosF]

I haven't found the time to debug this one :(

openHAB 2.4.0 Snapshot Build #1448 still has the same issue

I will try again now but someone needs to look into this since it should be fixed before the next Milestone (or 2.4 Release)

[bnjroos]

I have the same issue, is there a way to downgrade from misc-restdocs - 2.4.0.M7 to a lower build just on that package ?
Thanks

[kaikreuzer]

I have searched a lot and was luckily able to reproduce it in the IDE. It turned out that https://github.com/eclipse/smarthome/pull/6638 makes it work again.

[kaikreuzer]

Just tested it on the latest distro snapshot and it seems to work fine again!