Contradiction with Jeremiah 52:7
Jeremiah 52:7 states that the men of war fled by night, which does not mention the specific location details and Zedekiah's direction as mentioned in Jeremiah 39:4.
Jeremiah 52:7: Then the city was broken up, and all the men of war fled, and went forth out of the city by night by the way of the gate between the two walls, which [was] by the king's garden; (now the Chaldeans [were] by the city round about:) and they went by the way of the plain.
Contradiction with 2 Kings 25:4
This verse mentions fleeing by way of the plain, without specifying through the king's garden as in Jeremiah 39:4, offering a different detail of the escape route.
2 Kings 25:4: And the city was broken up, and all the men of war [fled] by night by the way of the gate between two walls, which [is] by the king's garden: (now the Chaldees [were] against the city round about:) and [the king] went the way toward the plain.