Remove unnecessary var data in log messages. Closes #1640

controllers/controllers.go

@@ -16,8 +16,6 @@ func InternalErrorHandler(w http.ResponseWriter, err error) {
 		return
 	}
 
-	log.Errorln(err)
-
 	w.WriteHeader(http.StatusInternalServerError)
 	if err := json.NewEncoder(w).Encode(j{"error": err.Error()}); err != nil {
 		InternalErrorHandler(w, err)