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 ('9791c054d7e8af3de19610717c16864a', -1, 1747580541, 1747580541, '0389b89a', 2, 0, 0)

Line : 190
File : sessions.php