Update app.py

app.py

@@ -193,7 +193,7 @@ index_name = 'mimtssinkqa'
 
 # Initialize the OpenAI embeddings object 
 from langchain_openai import OpenAIEmbeddings
-embeddings = OpenAIEmbeddings(openai_api_key=api_key)
+embeddings = OpenAIEmbeddings(openai_api_key=openai_api_key)
 
 # LOAD VECTOR STORE FROM EXISTING INDEX
 from langchain_community.vectorstores import Pinecone