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', 'varm4m2f36kpm4hds0uugdaod4', '54.162.133.222', '1539975114', '1539975114', '/catalog/default.php?cPath=47_111&osCsid=sg5fb257drs1fjumsps6tvo4v6')

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