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 ('7cde34c42d3023346e35e4d9f84defa9', -1, 1713883305, 1713883305, '03854f46', -9, 0, 0)

Line : 187
File : sessions.php