Reddit links are no longer previewing

Description

Original report: https://github.com/mattermost/mattermost-server/issues/16665

Summary
Reddit links are not previewing any longer.

Steps to reproduce
Mattermost 5.30.0
Attempt to link to a reddit post in Mattermost.

Expected behavior
A preview box should appear when linking to a reddit post.

Observed behavior
No preview is displayed.

QA Test Steps

None

Activity

Show:
Dean Whillier
January 20, 2021, 3:31 AM

Grooming comment: Harrison to queue up for discussion

Mana

None

Assignee

Harrison Healey

QA Assignee

None

Reporter

Amy Blais

Epic Link

None

Fix versions

Mattermost Team

Web Platform

Sprint

None

QA Testing Areas

None

GitHub Issue

None

Components

None

Severity

None