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 ('695cb8b5cde5e1dd270f97f8beedd7cd', -1, 1714041620, 1714041620, '0d3b8282', -2, 0, 0)

Line : 187
File : sessions.php