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 ('f271434a5b6a276c7bd835899623bcf9', -1, 1702238734, 1702238734, '12ce0c9d', -4, 0, 0)

Line : 187
File : sessions.php