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', '40kb2afvg2ndak6c07ov9ipm60', '54.80.219.236', '1537355439', '1537355439', '/catalog/allprods.php?osCsid=23ak8qpvqq3l1m0g2v25uku2e7')

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