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', '7un1disf5nib3ojmd8dgslk1l2', '54.196.26.1', '1539626052', '1539626052', '/catalog/product_info.php?products_id=149&osCsid=ei5089g5p61anphn10032u5c14')

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