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', 'dsi44sejbb4oee12ef3aq0e691', '54.80.87.166', '1540312151', '1540312151', '/catalog/password_forgotten.php?osCsid=3e4a4hav1gmfakbrr524g9k3q5')

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