1364 - Field 'user_agent' doesn't have a default value

insert into whos_online (customer_id, full_name, session_id, ip_address, time_entry, time_last_click, last_page_url, http_referer) values ('0', 'Guest', '3qrm63hbc8ngaf8rif5g7lmr2d', '35.168.111.204', '1594030428', '1594030428', '/catalog/product_reviews_write.php?products_id=5538&page=1', '')

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