Error 500 when tooting or viewing ATOM feed

[wirehack7]

I'm on v1.2.2 now and I'm getting server error 500 when trying to toot something or viewing the ATOM feed. This happens only when tooting or for the ATOM feed. All other interaction (liking, boosting, following etc) are working.
OS: Ubuntu 16.04 LTS
Using Mastodon with Docker and Nginx.
Before the update to v1.2.2 it worked.

Log of NGINX:

*.*.*.* - - [20/Apr/2017:11:37:56 +0200] "POST /api/v1/statuses HTTP/1.1" 500 990 "https://social.0day.agency/web/getting-started" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/57.0.2987.98 Safari/537.36 OPR/44.0.2510.857"
*.*.*.* - - [20/Apr/2017:11:40:31 +0200] "GET /users/wirehack7.atom HTTP/1.1" 500 990 "-" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/57.0.2987.98 Safari/537.36 OPR/44.0.2510.857"

I searched the issues and found one with error 500, too. But it not fully describes the problem.
Any advice on what is going wrong with the latest release?

---

• I searched or browsed the repo’s other issues to ensure this is not a duplicate.
• This bug happens on a tagged release and not on master (If you're a user, don't worry about this).

[Gargron]

Check the logs in docker logs mastodon_web_1 | grep status=500 then grep again with the unique request ID to get the full stacktrace of the corresponding error

[wirehack7]

Log shows that:

[838e2e7f-fcb0-4929-9bc0-1c177138d9ea] method=POST path=/api/v1/statuses format=html controller=Api::V1::StatusesController action=create status=500 error='ActiveModel::UnknownAttributeError: unknown attribute 'language' for Status.' duration=29.39 view=0.00 db=2.71

[838e2e7f-fcb0-4929-9bc0-1c177138d9ea] method=POST path=/api/v1/statuses format=html controller=Api::V1::StatusesController action=create status=500 error='ActiveModel::UnknownAttributeError: unknown attribute 'language' for Status.' duration=29.39 view=0.00 db=2.71
[838e2e7f-fcb0-4929-9bc0-1c177138d9ea]   
[838e2e7f-fcb0-4929-9bc0-1c177138d9ea] ActiveModel::UnknownAttributeError (unknown attribute 'language' for Status.):
[838e2e7f-fcb0-4929-9bc0-1c177138d9ea]   
[838e2e7f-fcb0-4929-9bc0-1c177138d9ea] app/services/post_status_service.rb:17:in `call'
[838e2e7f-fcb0-4929-9bc0-1c177138d9ea] app/controllers/api/v1/statuses_controller.rb:60:in `create'
[838e2e7f-fcb0-4929-9bc0-1c177138d9ea] app/controllers/concerns/localized.rb:24:in `block in set_locale'
[838e2e7f-fcb0-4929-9bc0-1c177138d9ea] app/controllers/concerns/localized.rb:23:in `set_locale'

Shall I migrate the db again or will data get lost? @Gargron

[wirehack7]

Ok, sorry. It's written here: https://github.com/tootsuite/mastodon/releases/tag/v1.2.2