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', 'gl57a74j8rmrsrh9hdcfuluhk4', '54.80.93.19', '1534311661', '1534311661', '/catalog/account.php?osCsid=6nkugtbpv3rck81in4amd2pe47')

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