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 ('ca8f70403a8d004b1a0f3b4ffbafbecd', -1, 1748531147, 1748531147, '0311876b', -9, 0, 0)

Line : 190
File : sessions.php