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', '5jkn1t0kp73k9je30t0or8tu40', '54.198.205.153', '1537759083', '1537759083', '/catalog/login.php?osCsid=uqail3hnai97jpqvhp1b00nij7')

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