More helpful error message when a template cannot be found.
More helpful error message when a template cannot be found.

openstate/popit,mysociety/popit,Sinar/popit,openstate/popit,mysociety/popit,mysociety/popit,mysociety/popit,mysociety/popit,openstate/popit,Sinar/popit,Sinar/popit,Sinar/popit,openstate/popit