[web2py] Invalid Query invalid literal for int() with base 10: '12f'

[rinosh]

After i insert into the table. i get that the record is inserted. But when 
i go to http://127.0.0.1:8000/patient_test/appadmin/select/db i get Invalid 
Query

invalid literal for int() with base 10: '12f' and no value is listed. What 
should i do?