Your screenshot is cut off so can’t see what that node is linked to. But it looks like you might have put points into the next node that depends on Flame Reaver. You have to remove the other points first.
No there’s no point past that. You can see that there are only 7 point total in the tree and that the line past the dot is not lit up.
It’s most likely as you are surmizing, that you have Flame Reave on your skill bar, but we can’t be 100% sure like @BroncoCollider said without knowing exactly what the message says.