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 ('d56fc7d1ed900974548785cd2a871f7b', -1, 1747819028, 1747819028, '1276ab1c', 30, 0, 0)

Line : 190
File : sessions.php