1366 - Incorrect integer value: '' for column 'customer_id' at row 1

insert into whos_online (customer_id, full_name, session_id, ip_address, time_entry, time_last_click, last_page_url) values ('', 'Guest', 'slot9hg53usd2kmpv5qkfp0of7', '3.85.92.139', '1561471404', '1561471404', '/product_info.php/info/p46_DTD-Flaschen-Blei-System.html')

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