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', '0ohhpkj753oji2c65fe4puud40', '54.224.220.72', '1534760884', '1534760884', '/catalog/allprods.php?osCsid=sg5fb257drs1fjumsps6tvo4v6')

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