Can't get SAML to work ( OneLogin SAML endpoint)

Can't get SAML to work ( OneLogin SAML endpoint)

I set up SAML for our Zoho account so Mail users can login via OneLogin SAML service..  

I was able to successfully configure SAML in Zoho Control Panel

But when my users try to access Zoho Mail from OneLogin single click portal.. is says 

Destination attribute is not present
https://accounts.zoho.com/samlresponse/[myaccount].business.zoho.com

Please advise.. 

Full error message here: