phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 'session_user_id'

INSERT INTO sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('bbac1ebb9f82d04ab42ec63f992a8a2e', -1, 1715040060, 1715040060, '12d8e34c', 7, 0, 0)

Line : 189
File : sessions.php