just in case, if location or encoding is null when GenFace is run then return None, and catch this in person and show error on GUI -- for now uploading from a phone does odd things to the image format and fails to work in face_recognition.load_image()

person.py

@@ -101,10 +101,13 @@ def AddRefimgToPerson( filename, person ):
         settings = Settings.query.first()
         model=AIModel.query.get(settings.default_refimg_model)
         refimg.face, face_locn = GenFace( filename, model=model.name )
+        os.remove(filename)
+        if not face_locn:
+            raise Exception("Could not find face in uploaded reference image" )
+            return
         refimg.face_locn = json.dumps(face_locn)
         refimg.model_used = settings.default_refimg_model
         refimg.created_on = time.time()
-        os.remove(filename)
         person.refimg.append(refimg)
         db.session.add(person)
         db.session.add(refimg)