Contradiction with Joshua 15:63
This verse mentions that the children of Judah could not drive out the Jebusites from Jerusalem, while Joshua 11:2 implies the conquest and destruction of various kings.
Joshua 15:63: As for the Jebusites the inhabitants of Jerusalem, the children of Judah could not drive them out: but the Jebusites dwell with the children of Judah at Jerusalem unto this day.
Contradiction with Judges 1:19
It states that Judah could not drive out the inhabitants of the valley because they had iron chariots, contradicting the complete victory implied in Joshua 11:2.
Judges 1:19: And the LORD was with Judah; and he drave out [the inhabitants of] the mountain; but could not drive out the inhabitants of the valley, because they had chariots of iron. [drave...: or, possessed the mountain]