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', 'u8h3vjjvfen7d9mc0kr4lcudd6', '54.92.163.105', '1539649994', '1539649994', '/catalog/products_new.php?osCsid=ta8g7288cv9du0p8gstkoqg7n1')

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