Abode ESign via URL in Salesforce Community

I am trying to send PDF files for signature from Experience cloud using this URL: 

<a href="/apex/echosign_dev1__AgreementTemplateProcess?templateId=<templateId>">Click here to get documents for sign</a>

The template has all the correct files, it is set to auto send and works perfectly when used as a URL in a Quick Action. But gives an error when the link is clicked from the Commmunity site. What could be wrong? 

P.S. Its my first time working with Adobe Esign and Salesforce Experience cloud.