Fix update photo from fb

apps/auth/views.py

@@ -1,3 +1,5 @@
+import os
+
 from uuid import uuid4
 from urllib.parse import urlsplit
 
@@ -182,7 +184,7 @@ class FacebookLoginOrRegistration(View):
                 login(requests, user=user)
                 return JsonResponse({"success": True})
         else:
-            if not user.photo and photo_data:
+            if (not user.photo or (user.photo and not os.path.isfile(user.photo.path))) and photo_data:
                 photo = ContentFile(photo_data)
                 fname = str(fb_id) + '.jpg'
                 user.photo.save(fname, photo, save=True)