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', 'b5p4sjmukre5s8aahkf1gl8615', '54.81.150.27', '1537439238', '1537439238', '/catalog/default.php?cPath=48_155&osCsid=hr8qpn0kp9gm2rlv3qn8viiqq6')

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