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', '0jsultuv8572ks2forffl0srh7', '54.198.96.198', '1534422798', '1534422798', '/catalog/allprods.php?osCsid=j1sjfcuktsk9h64c0ksasv0s55')

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