Actually my scenario is 
In vf page shows picklist values are account names and onchange the page shows contact picklist values are child contacts names of above account names. Finally onchange the page shows another picklist option & value of this is opportunity names of above selected contact name. 
Shows the errors if no contact of account and no opportunity of contact when really does not have child record in parent level 

I have this field encrypted and there is data in there.

Please advise.