Fixed #29135 -- Prevented get_object/list_or_404() from hiding AttributeError raised by QuerySet filtering.

tests/get_object_or_404/models.py

@@ -25,11 +25,17 @@ class ArticleManager(models.Manager):
         return super().get_queryset().filter(authors__name__icontains='sir')
 
 
+class AttributeErrorManager(models.Manager):
+    def get_queryset(self):
+        raise AttributeError('AttributeErrorManager')
+
+
 class Article(models.Model):
     authors = models.ManyToManyField(Author)
     title = models.CharField(max_length=50)
     objects = models.Manager()
     by_a_sir = ArticleManager()
+    attribute_error_objects = AttributeErrorManager()
 
     def __str__(self):
         return self.title