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', 'fq44h9aqn70og9r49g943fphf0', '54.161.71.87', '1537285647', '1537285647', '/catalog/privacy.php?osCsid=pj846q4v97ul4a0bofm8qs92k2')

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