Does anyone remember where to download the JSON_Funtions plugin from?

Pritamd - Is your instance on cloud or a local install? If cloud, as it says in this thread forum.appian.com/.../e-136349, open a support ticket with Appian and they will help you install it. If Local install, I'm sure Appian can help you find that plugin and get it to you. Best is to contact your Appian suport contact either way.

I do agree with philb that it should still be on shared component and may be have it only compatible with up to certain version of the product.

Pritamd - Is your instance on cloud or a local install? If cloud, as it says in this thread forum.appian.com/.../e-136349, open a support ticket with Appian and they will help you install it. If Local install, I'm sure Appian can help you find that plugin and get it to you. Best is to contact your Appian suport contact either way.

I do agree with philb that it should still be on shared component and may be have it only compatible with up to certain version of the product.