phpBB : Critical Error

Error creating new session

DEBUG MODE

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

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('d0eb113435fa5536ef0e5a535ba642c2', -1, 1751180667, 1751180667, 'd849d85d', 5, 0, 0)

Line : 189
File : sessions.php