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', '0vs6jouqvqaabu3ioamo0dten4', '54.161.77.30', '1540293312', '1540293312', '/catalog/default.php?cPath=51_66&osCsid=e2dd2b06qfq8d01d0o0h6nq4a6')

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