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 ('d5f98b5c3bb2b0e143f5d18e7b3dcd5c', -1, 1714678756, 1714678756, '12de756d', 23, 0)

Line : 158
File : sessions.php