Why was general lee upset at Stuart?

General Robert E. Lee was upset with Confederate cavalry commander J.E.B. Stuart for failing to provide adequate intelligence during the Battle of Gettysburg. Stuart's absence and poor reconnaissance left Lee unaware of the Union army's movements and positions, hindering his strategic planning. Lee believed that effective cavalry support was crucial for success, and Stuart's actions contributed to the challenges faced by the Confederate forces. This disappointment affected their relationship and highlighted the importance of communication and coordination in military operations.