I have created a custom module for contact us and I get this template into my cms page using,

{{block class="Magento\Framework\View\Element\Template" template="Vendor_Module::form.phtml" name="contactForm"}}

WHen i apply google ReCaptcha using https://magecomp.com/blog/install-google-recaptcha-magento-custom-form/

my contact form not loading i am getting error like

We're sorry, an error has occurred while generating this content.

if i remove the Recaptcha code contact us form working, how to add google Recaptcha and include into my contact us form?

I am following this link https://magebug.blogspot.com/2018/05/magento-2-add-google-recaptcha-in.html

The link suggests add a controller, i have already a controller file, how to add more than one controller under execute()