Error 500 on link embeds.
OK, folks, I've looked and can't find a solution.
Everything was working fine until a couple days ago we had a massive crash brought on by a lightning strike. I eventually had to hire some professional help to get our site restored and everything is back to normal except one thing: embedding website links.
Any time we try to embed a website link it displays "failed with error code 500".
Here's the funny part: Twitter links still embed just fine. Copy and pasting images still works just fine. It's only when you try to paste a web link to a news story or article or something like that that it fails.
Vanilla version 3.3
Ubuntu Server 18.04 LTS
Virtualmin Control Panel
Thanks in advance for any guidance.