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 ('d13ab33f65395748bf8466555c3a76c1', -1, 1714037686, 1714037686, '12e19520', 7, 0, 0)

Line : 187
File : sessions.php