all: fix left over references to error templates

passbook/lib/views.py

@@ -27,4 +27,9 @@ class CreateAssignPermView(CreateView):
 
 def bad_request_message(request: HttpRequest, message: str) -> HttpResponse:
     """Return generic error page with message, with status code set to 400"""
-    return render(request, "error/400.html", {"message": message}, status=400)
+    return render(
+        request,
+        "error/generic.html",
+        {"message": message, "card_title": "Bad Request",},
+        status=400,
+    )