From a0748e1093bf31b70fb0ce6aade487a4faf57784 Mon Sep 17 00:00:00 2001
From: Gabriel Luiz Freitas Almeida <gabriel@logspace.ai>
Date: Fri, 21 Jul 2023 08:55:31 -0300
Subject: [PATCH] =?UTF-8?q?=F0=9F=90=9B=20fix(base.py):=20fix=20validation?=
 =?UTF-8?q?=20logic=20in=20=5Fvalidate=5Fnodes=20method=20to=20handle=20ca?=
 =?UTF-8?q?se=20when=20there=20is=20only=20one=20node=20in=20the=20graph?=
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---
 src/backend/langflow/graph/graph/base.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/backend/langflow/graph/graph/base.py b/src/backend/langflow/graph/graph/base.py
index 0d93dd0db..99b4e2b3d 100644
--- a/src/backend/langflow/graph/graph/base.py
+++ b/src/backend/langflow/graph/graph/base.py
@@ -77,6 +77,8 @@ class Graph:
 
     def _validate_nodes(self) -> None:
         """Check that all nodes have edges"""
+        if len(self.nodes) == 1:
+            return
         for node in self.nodes:
             if not self._validate_node(node):
                 raise ValueError(