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 ('0a8ef2554f7cde7185d62e0de08d01d7', -1, 1753041394, 1753041394, '126109ae', -4, 0, 0)

Line : 189
File : sessions.php