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 ('22eee7d8c2d61b634ca1896978b80642', -1, 1713454212, 1713454212, '0310829b', -9, 0, 0)

Line : 187
File : sessions.php