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) VALUES ('ab721a62d80d5831f1f37cb4eaa0c3d2', -1, 1714379321, 1714379321, '12d9dc72', 18, 0)

Line : 158
File : sessions.php