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', 'pmhd1gcr5ivc22ees9v3q7dcb6', '54.92.163.105', '1540152150', '1540152150', '/catalog/products_new.php?osCsid=ikh43r3o4ube2orm93dunqmj14')

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