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', '3e6podb99fo669chujmf391557', '54.198.205.153', '1537425809', '1537425809', '/catalog/default.php?cPath=52_187&osCsid=n9an4orrr7q6s6vq4c2vp31rv1')

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