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 ('21b0230e57c439adb5fe98e7ae97d7e4', -1, 1713558577, 1713558577, '0d3bc376', -4, 0, 0)

Line : 187
File : sessions.php