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 ('978f0e9958ab32ed9f9a8e78aad09402', -1, 1747538016, 1747538016, '0390d339', 2, 0, 0)

Line : 190
File : sessions.php