I20200109-10:14:40.384(-5) server.js:204 System ➔ error Error sending message: Error: You are not authorized to change message properties
at validateUserIdentity (app/lib/server/functions/sendMessage.js:164:9)
at sendMessage (app/lib/server/functions/sendMessage.js:174:2)
at MethodInvocation.sendMessage (app/lib/server/methods/sendMessage.js:86:11)
at MethodInvocation.methodsMap.(anonymous function) (app/lib/server/lib/debug.js:67:34)
at maybeAuditArgumentChecks (packages/ddp-server/livedata_server.js:1771:12)
at DDP._CurrentMethodInvocation.withValue (packages/ddp-server/livedata_server.js:1689:15)
at Meteor.EnvironmentVariable.EVp.withValue (packages/meteor.js:1234:12)
at resolve (packages/ddp-server/livedata_server.js:1687:36)
at new Promise (<anonymous>)
at Server.applyAsync (packages/ddp-server/livedata_server.js:1686:12)
at Server.apply (packages/ddp-server/livedata_server.js:1625:26)
at Server.call (packages/ddp-server/livedata_server.js:1607:17)
at DDPCommon.MethodInvocation.Meteor.runAsUser (app/api/server/v1/chat.js:175:59)
at packages/dispatch_run-as-user.js:211:14
at Meteor.EnvironmentVariable.EVp.withValue (packages/meteor.js:1234:12)
at Object.Meteor.runAsUser (packages/dispatch_run-as-user.js:210:33)
at Object.post (app/api/server/v1/chat.js:175:23)
at DDP._CurrentInvocation.withValue (app/api/server/api.js:343:82)
at Meteor.EnvironmentVariable.EVp.withValue (packages/meteor.js:1234:12)
at Object._internalRouteActionHandler [as action] (app/api/server/api.js:343:39)
at Route.share.Route.Route._callEndpoint (packages/nimble_restivus/lib/route.coffee:150:32)
at packages/nimble_restivus/lib/route.coffee:59:33
at packages/simple_json-routes.js:98:9 

[
  "{\"stack\":\"TypeError: Cannot read property '_id' of undefined
    at Promise.asyncApply (app/apps/server/bridges/messages.js:22:14)
    at /opt/Rocket.Chat/programs/server/npm/node_modules/meteor/promise/node_modules/meteor-promise/fiber_pool.js:43:40\",\"message\":\"Cannot read property '_id' of undefined\"}"
]