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 ('e68fe63944dc2e8f2788e3f4b53d3d94', -1, 1714036085, 1714036085, '12bedb41', -8, 0, 0)

Line : 187
File : sessions.php