Description:

Refer Description of issue

Steps to reproduce:

1. Administration --> Accounts
2. Enable Allow Anonymous Read and Allow Anonymous Write
3. open private window and go to any channel
4. Click on Or talk as anonymous

Expected behavior:

Ask for username

Actual behavior:

Internal Server error

Server Setup Information:

• Version of Rocket.Chat Server: 1.1.0-develop
• Operating System: MacOS
• Deployment Method: Meteor
• Number of Running Instances: 1
• DB Replicaset Oplog: Enabled
• NodeJS Version: 8.11.4
• MongoDB Version: 4.0.2

Additional context

Fixed it making a PR for it