Hi All,

Please help me to sort out this query...error mentioned above

<apex:page standardController="Contact" >
<apex:form >
    <apex:pageBlock >
    <apex:pageBlockSection title="General Information" columns="2" >
     <apex:inputField value="{!Contact.FirstName}"/>
     <apex:inputField value="{!Contact.LastName}"/>
     <apex:inputField value="{!Contact.Email}"/>
     <apex:inputField value="{!Contact.Phone}"/>
     </apex:pageBlockSection>
          
     <apex:pageBlockSection title="Address Information" columns="2" >
     <apex:inputField value="{!Contact.MailingCountry}"/>
     <apex:inputField value="{!Contact.MailingCity}"/>
     <apex:inputField value="{!Contact.MailingState}"/>
     <apex:inputField value="{!Contact.MailingPostalcode}"/>
     </apex:pageBlockSection>  
     
     <apex:pageBlockSection title="Amount Information" columns="2" >
                <apex:inputField value="{!contact.Amount_Invested__c}"/>
                <apex:inputField value="{!contact.Amount_Earned__c}"/>
                 </apex:pageBlockSection> 
                                 
<apex:pageBlockButtons Location="Bottom">
    <apex:commandButton action="{!save}" value="Save"/>
    <apex:commandButton action="{!cancel}" value="cancel"/>
     </apex:pageBlockButtons>
    </apex:pageBlock>
   </apex:form>
</apex:page>