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', 'llv6c7cotr4tafr4af56s3mu25', '54.80.93.19', '1534298453', '1534298453', '/catalog/default.php?osCsid=ne1k8krsq39j9i1j9e6qgvlpl1')

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