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 ('c4f93c8a6aee1a144c4f8b0d3ce2b201', -1, 1713285298, 1713285298, '12db706f', -4, 0, 0)

Line : 187
File : sessions.php