I'm using Firefox on a laptop and every time I try to share a tweet in a thread, I get this error:

The link could not be embedded because of an unexpected error: error: undefined.

Anybody know if there is some sort of setting I need to change on my browser to fix this?

I use Firefox and haven';t had this problem.

I found this online. It's old but may still be a thing.

"If you see a shield icon in your address bar then your Firefox configuration of tracking protection may be blocking Twitter's script.

Select the shield icon and disable tracking protection for the current session. The embedded timeline should appear."