TypeError: Cannot read property 'filter' of undefined

[mfa777]

Description:

The instance runs well, but there is a same error in the log.

 I20200411-03:19:31.260(0) Integrations ➔ Outgoing WebHook.debug Starting search for triggers for the room: 2tsCvq9r2AZPHnLSPTZaGDMJWcdau8uwPj 
I20200411-03:19:31.263(0) Exception in defer callback: TypeError: Cannot read property 'filter' of undefined     at RocketChatIntegrationHandler.getTriggersToExecute (app/integrations/server/lib/triggerHandler.js:505:16)     at RocketChatIntegrationHandler.executeTriggers (app/integrations/server/lib/triggerHandler.js:576:34)     at _wrapperFunction (app/integrations/server/triggers.js:6:38)     at callbacks.runItem (app/callbacks/lib/callbacks.js:110:70)     at Object.callbacks.runItem (app/metrics/server/callbacksMetrics.js:24:20)     at app/callbacks/lib/callbacks.js:39:35     at app/callbacks/lib/callbacks.js:45:45     at app/callbacks/lib/callbacks.js:45:47     at app/callbacks/lib/callbacks.js:45:47     at app/callbacks/lib/callbacks.js:45:47     at app/callbacks/lib/callbacks.js:45:47     at app/callbacks/lib/callbacks.js:45:47     at app/callbacks/lib/callbacks.js:45:47     at app/callbacks/lib/callbacks.js:45:47     at app/callbacks/lib/callbacks.js:45:47     at app/callbacks/lib/callbacks.js:45:47     at callbacks.run (app/callbacks/lib/callbacks.js:126:9)     at Object.callbacks.run (app/metrics/server/callbacksMetrics.js:14:17)     at app/lib/server/functions/sendMessage.js:243:32     at Meteor.EnvironmentVariable.EVp.withValue (packages/meteor.js:1234:12)     at packages/meteor.js:550:25     at runWithEnvironment (packages/meteor.js:1286:24)  

Steps to reproduce:

I am not sure what step make this error. it seems related with some broken room which i don't know. When there is many users login, it happened frequently.

Expected behavior:

No error log.

Actual behavior:

https://i.imgur.com/66N7nks.png

Server Setup Information:

• Version of Rocket.Chat Server: 3.1.0
• Operating System: ubuntu 16.04
• Deployment Method: docker
• Number of Running Instances: 2
• DB Replicaset Oplog: 1
• NodeJS Version: v12.16.1
• MongoDB Version:4.0.17

Client Setup Information

• Desktop App or Browser Version: Firefox
• Operating System: Windows

Additional context

I run a test instance using the same database dump, but only me was logged in. it didn't show error.

This instance run years, it keep updating begin from very old version.

Relevant logs:

Above showed

[ggazzo]

look at your collections, again the same problem related here, somehow your direct messages are missing uids field, do you remember if everything went well with your migrations? migration number 179 should be responsible for creating this field