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', 'buf6jt9hje9bl02i5o1r9rknb2', '54.224.166.141', '1537628829', '1537628829', '/catalog/default.php?cPath=46&osCsid=mgtbnmhklabenbfik9u1i8hg90')

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