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', 'qu768ntlv09dgrfj2gr920dq63', '54.156.39.245', '1540218772', '1540218772', '/catalog/product_info.php?products_id=918&osCsid=ii39ig7jhjqbl3t32lmgi20n44')

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