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', 'ulkrg4pc1drhuh4t3tt1e8g3d4', '54.80.140.29', '1534510485', '1534510485', '/catalog/create_account.php?osCsid=nndm09juj53suhn899knerl1u6')

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