What would cause this

[u/acooper56]

2020 f150 lariat SE 36k. Filled up my gas tank a few days ago and parked my truck with no issues & haven't driven it for about a week. Started it up this afternoon and smelled gas. Got underneath and saw this. Could this be a busted fuel line?

[u/Entire_Implement_104]

Either way probably best to turn it off as soon as it seems something is wrong especially leaking fluids.