I have set up Mattermost notifications using the discourse-chat-integration plugin with incoming webhook and slashcommands.
Anyone got an idea?
I got this error - seen on my Mattermost log.
[2017/10/21 13:58:49 CEST] [EROR] /hooks/xu1sufehopdr8mwmfecq7uqfaa:CreateWebhookPost code=500 rid=tsufqba5e38uzfb7qfb5754hew uid= ip=5.189.176.198 Error creating post [details: err=store.sql_post.save.app_error]
Discourse log shows: DiscourseChat::ProviderError
/var/www/discourse/plugins/discourse-chat-integration/lib/discourse_chat/provider/mattermost/mattermost_provider.rb:26:in `send_via_webhook'
/var/www/discourse/plugins/discourse-chat-integration/lib/discourse_chat/provider/mattermost/mattermost_provider.rb:78:in `trigger_notification'
/var/www/discourse/plugins/discourse-chat-integration/app/services/manager.rb:83:in `block in trigger_notifications'
/var/www/discourse/plugins/discourse-chat-integration/app/services/manager.rb:76:in `each'
/var/www/discourse/plugins/discourse-chat-integration/app/services/manager.rb:76:in `trigger_notifications'
/var/www/discourse/plugins/discourse-chat-integration/app/jobs/regular/notify_chats.rb:7:in `execute'
/var/www/discourse/app/jobs/base.rb:134:in `block (2 levels) in perform'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/rails_multisite-1.1.0.rc4/lib/rails_multisite/connection_management.rb:71:in `with_connection'
/var/www/discourse/app/jobs/base.rb:129:in `block in perform'
/var/www/discourse/app/jobs/base.rb:125:in `each'
/var/www/discourse/app/jobs/base.rb:125:in `perform'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/sidekiq-5.0.5/lib/sidekiq/processor.rb:188:in `execute_job'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/sidekiq-5.0.5/lib/sidekiq/processor.rb:170:in `block (2 levels) in process'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/sidekiq-5.0.5/lib/sidekiq/middleware/chain.rb:128:in `block in invoke'
/var/www/discourse/lib/sidekiq/pausable.rb:79:in `call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/sidekiq-5.0.5/lib/sidekiq/middleware/chain.rb:130:in `block in invoke'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/sidekiq-5.0.5/lib/sidekiq/middleware/chain.rb:133:in `invoke'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/sidekiq-5.0.5/lib/sidekiq/processor.rb:169:in `block in process'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/sidekiq-5.0.5/lib/sidekiq/processor.rb:141:in `block (6 levels) in dispatch'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/sidekiq-5.0.5/lib/sidekiq/job_retry.rb:97:in `local'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/sidekiq-5.0.5/lib/sidekiq/processor.rb:140:in `block (5 levels) in dispatch'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/sidekiq-5.0.5/lib/sidekiq.rb:36:in `block in <module:Sidekiq>'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/sidekiq-5.0.5/lib/sidekiq/processor.rb:136:in `block (4 levels) in dispatch'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/sidekiq-5.0.5/lib/sidekiq/processor.rb:204:in `stats'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/sidekiq-5.0.5/lib/sidekiq/processor.rb:131:in `block (3 levels) in dispatch'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/sidekiq-5.0.5/lib/sidekiq/job_logger.rb:7:in `call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/sidekiq-5.0.5/lib/sidekiq/processor.rb:130:in `block (2 levels) in dispatch'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/sidekiq-5.0.5/lib/sidekiq/job_retry.rb:72:in `global'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/sidekiq-5.0.5/lib/sidekiq/processor.rb:129:in `block in dispatch'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/sidekiq-5.0.5/lib/sidekiq/logging.rb:44:in `with_context'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/sidekiq-5.0.5/lib/sidekiq/logging.rb:38:in `with_job_hash_context'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/sidekiq-5.0.5/lib/sidekiq/processor.rb:128:in `dispatch'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/sidekiq-5.0.5/lib/sidekiq/processor.rb:168:in `process'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/sidekiq-5.0.5/lib/sidekiq/processor.rb:85:in `process_one'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/sidekiq-5.0.5/lib/sidekiq/processor.rb:73:in `run'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/sidekiq-5.0.5/lib/sidekiq/util.rb:16:in `watchdog'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/sidekiq-5.0.5/lib/sidekiq/util.rb:25:in `block in safe_thread'