From 36d3709371a43d405764d1cb0b1869fc5fd8686d Mon Sep 17 00:00:00 2001
From: Henry <hzj94@hotmail.com>
Date: Mon, 31 Jul 2023 00:08:37 +0100
Subject: [PATCH] minor fix when promptValues is undefined

---
 packages/components/nodes/chains/LLMChain/LLMChain.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/components/nodes/chains/LLMChain/LLMChain.ts b/packages/components/nodes/chains/LLMChain/LLMChain.ts
index c9e491650..5088b34d4 100644
--- a/packages/components/nodes/chains/LLMChain/LLMChain.ts
+++ b/packages/components/nodes/chains/LLMChain/LLMChain.ts
@@ -116,7 +116,7 @@ const runPrediction = async (
      */
     const promptValues = handleEscapeCharacters(promptValuesRaw, true)
 
-    if (inputVariables.length > 0) {
+    if (promptValues && inputVariables.length > 0) {
         let seen: string[] = []
 
         for (const variable of inputVariables) {