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 ('4b6c820f7c22c8bab6b92d4e975b1acc', -1, 1714685685, 1714685685, '0315e929', 3, 0)

Line : 158
File : sessions.php