How i can disable embedded preview pdf file


Hi everyone
I’m newbee, im running with rocket chat on permise with version 1.3.2 . I’m using rocket chat desktop app in my company. But problem the app always go blank and crash when user upload pdf file, the problem just only in this user and with who recieve pdf file. I think the problem is embedded preview first page of pdf file
My question how i can disable embedded preview pdf file. User just only download don’t need see preview.
I hope someone can help me disable function. Thank so much

Server Setup Information

  • Version of Rocket.Chat Server: 1.3.2
  • Operating System: Centos 7.6
  • Deployment Method: bundle .tar
  • Number of Running Instances: 2
  • DB Replicaset Oplog: Enable
  • NodeJS Version: 8.11.4
  • MongoDB Version: 3.6.7
  • Proxy: nginx
  • Firewalls involved: No