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', 'trhq9p0i0kfa1ngu72f2rvfn15', '54.92.160.119', '1539833004', '1539833004', '/catalog/allprods.php?osCsid=e25lgihah2kfnd0la5b2kbi4h6')

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