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', '67tfd9iu50pq6695oe2ovqeqj6', '54.162.118.107', '1539771580', '1539771580', '/catalog/default.php?osCsid=4o5mi8sf653d9p4j4jesah05j2')

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