Fixed #26342 -- Prevented unpacking when repr a NodeNotFoundError

tests/migrations/test_exceptions.py

@@ -0,0 +1,12 @@
+from django.db.migrations.exceptions import NodeNotFoundError
+from django.test import SimpleTestCase
+
+
+class ExceptionTests(SimpleTestCase):
+    def test_node_not_found_error_repr(self):
+        node = ('some_app_label', 'some_migration_label')
+        error_repr = repr(NodeNotFoundError('some message', node))
+        self.assertEqual(
+            error_repr,
+            "NodeNotFoundError(('some_app_label', 'some_migration_label'))"
+        )