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', 'erqn7irfsou5180onv8r82cut6', '54.224.166.141', '1537655306', '1537655306', '/catalog/products_new.php?osCsid=98gmlsljt33rt1727osgke44l6')

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