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', 'o26pr148562rdgikjsgbq5qbj1', '54.198.142.121', '1537418254', '1537418254', '/catalog/default.php?cPath=29&osCsid=jafi5mujpkmu3k6k2poeokfii4')

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