Contradiction with 2 Kings 24:3-4
These verses describe how the Lord allowed judgment because of Manasseh's sins, indicating a longer-standing reason for God's anger rather than just Zedekiah's actions mentioned in 2 Kings 24:20.
2 Kings 24:3-4: Surely at the commandment of the LORD came [this] upon Judah, to remove [them] out of his sight, for the sins of Manasseh, according to all that he did;
Contradiction with 2 Chronicles 36:12-13
These verses attribute the cause of the Lord's anger to Zedekiah's refusal to humble himself before Jeremiah and break his covenant with Nebuchadnezzar, which contrasts with the more generalized statement in 2 Kings 24:20.
2 Chronicles 36:12-13: And he did [that which was] evil in the sight of the LORD his God, [and] humbled not himself before Jeremiah the prophet [speaking] from the mouth of the LORD.