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', 'fjqf1dq3fee1p5ubtjeg2j2ns0', '54.224.150.24', '1540025358', '1540025358', '/catalog/product_info.php?products_id=153&osCsid=drbncri0j7c0jhc1laokrca2u5')

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