Including emails in streams doesn't work

Including emails in streams doesn't work

On the group card I can click on streams enabled and enable streams however below that the "include emails" toggle has a yellow exclamation mark next to it an when i click on the toggle I get the error "Oops, an error occurred while updating group emailing status."

What I want to do is to add the emails sent from the group to the stream so everyone is up to date regarding which emails have been answered and which haven't. I am hoping the include emails toggle will accomplish that.