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 ('e62ae8254dd5c6cd639df77fe4d7a900', -1, 1713887978, 1713887978, '1275c4b8', -4, 0, 0)

Line : 187
File : sessions.php