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 ('900ab811031b4ec879b748d5c320447f', -1, 1709572356, 1709572356, '22ec8681', -11, 0, 0)

Line : 187
File : sessions.php