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) VALUES ('68854b95a6a44017f05d4fbf1b0ab9dc', -1, 1714321233, 1714321233, '12bfd8a3', -4, 0)

Line : 158
File : sessions.php