Car will not go forward in drive but reverse works perfectly fine

What is your question?

I was driving and the truck mad a really bad scraping noise then started to lock up in the front Im pretty sure looked at the drive line and it looked like it could be the problem but I don’t know?

What makes this problem better or worse?

Reverse is the only way to drive right now

How long has your 1998 Lincoln Navigator had this problem?

It happened yesterday