None Of My Cs Cart Mails Are Getting Sent [Phpmail Was Not Instantiated]

Dear All,

I'm having an issue when trying to configure emails on my CS CART MULTI VENDOR. For some reason, it keeps throwing the error "mail was not instantiated" although when i tried to invoke the phpmail method from my server root, it worked and i got the email successfully therefore we can rule out the server / hosting provider, it is an issue with cs cart specifically.

Can anyone help ?