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', '8ouj0eeun7q222p1ed4ivdmqo3', '54.158.208.189', '1539629705', '1539629705', '/catalog/default.php?cPath=46_241&osCsid=8gbo9gpp1shp6q509a7614gbp7')

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