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', '6336l3jcl5jnf8rhk9b234j7v7', '54.198.55.167', '1540018117', '1540018117', '/catalog/product_info.php?products_id=905&osCsid=im0ars4b6is8j143dke1ppake2')

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