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', '863l3357pvo0at424c2no5l5j2', '54.196.26.1', '1539626275', '1539626275', '/catalog/shipping.php?osCsid=lfo15fhilvjippiq31j8bqdrq2')

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