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 ('9a5efd3955da68b00c052a57373659e9', -1, 1749188419, 1749188419, 'd849d832', 2, 0, 0)

Line : 190
File : sessions.php