CaperJS expert - Minor Task - Sendkeys is not working

Hello, I am trying to fill the datepicker input field with the Sendkeys method by XPath but It's not working. You need to dig the current code and give me the working solution. I am able to fill the name field in the same form using Sendkeys but not datepicker field. I have attached the target website form screenshot. I will share the code in the chat. If you are a starter in casperjs, please do not apply. Type 'casperjs' in the top if you are not a bot.