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 ('7094596494336085e12036885ed6b9e8', -1, 1740707458, 1740707458, '12da1a1b', 2, 0, 0)

Line : 189
File : sessions.php