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', 'v5nejbrhcp6s2141n4cf91f3c5', '54.161.77.30', '1540299308', '1540299308', '/catalog/default.php?cPath=29_235&osCsid=9vuirppg9bo88k01cjdu7pvk43')

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