fix 404 when user not exist

common/utils.py

@@ -4,7 +4,7 @@
 
 from discord import SyncWebhook
 from django.conf import settings
-from django.core.exceptions import PermissionDenied
+from django.core.exceptions import ObjectDoesNotExist, PermissionDenied
 from django.core.signing import b62_decode, b62_encode
 from django.http import Http404, HttpRequest, HttpResponseRedirect, QueryDict
 from django.utils import timezone
@@ -87,7 +87,7 @@ def wrapper(request, user_name, *args, **kwargs):
 
         try:
             target = APIdentity.get_by_handle(user_name, match_linked=True)
-        except APIdentity.DoesNotExist:
+        except ObjectDoesNotExist:
             raise Http404(_("User not found"))
         target_user = target.user
         viewer = None

mastodon/views/common.py

@@ -102,4 +102,11 @@ def disconnect_identity(request, account):
                 _("You cannot disconnect last login identity."),
             )
         account.delete()
+    messages.add_message(
+        request,
+        messages.INFO,
+        _("Login information about {handle} has been removed.").format(
+            handle=account.handle
+        ),
+    )
     return redirect(reverse("users:info"))