AS should use the v1 endpoint, rather than r0
MODIFY
appservice/routing/routing.go
appservice/routing/routing.go
@@ -27,7 +27,7 @@ import (
"github.com/matrix-org/util"
)
-const pathPrefixApp = "/_matrix/app/r0"
+const pathPrefixApp = "/_matrix/app/v1"
// Setup registers HTTP handlers with the given ServeMux. It also supplies the given http.Client
// to clients which need to make outbound HTTP requests.

AS should use the v1 endpoint, rather than r0 (#827)