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I am using dev org (not any trailhead ground).
Please let me know howto fix this.

Thanks

Hello Everyone,

I have created visualforce email template and tagged to approval process which will get trigger to Approver when some one request for approval.
 
When Approver tries to approve/reject through the email he/she received, approval response is not changing accordingly in salesforce.

Can some one please suggest what might be the problem here. Is the problem with visualforce template or any ?

Thanks in advance!!!