Zoho Form multiline field doesnt prefill from CRM

Zoho Form multiline field doesnt prefill from CRM

I have a zoho form which I prefill from CRM data, and there's a multi-line field in the form that I am trying to prefill from CRM. It doesnt allow me to prefill the said field and just displays "Page Not Found" when I try to access the link with the prefill values via deluge. I double checked my codes by using the Prefill URL Builder in Zoho Form itself and the url I generate there also returns "Page Not Found".
We didnt have any issues with this before and this suddenly come up.
Can you guys urgently look at this?