Update app.py

app.py

@@ -38,14 +38,9 @@ embedding = GoogleGenerativeAIEmbeddings(model="models/embedding-001", google_ap
 vectorstore = Chroma(persist_directory='chroma_db', embedding_function=embedding)
 
 
-
-
-if GOOGLE_API_KEY:
-    vectorstore = initialize_vectorstore(GOOGLE_API_KEY)
-    if vectorstore:
-        retriever = vectorstore.as_retriever(search_type="mmr", search_kwargs={"k": 3, "lambda_mult": 1})
-    llm = ChatGoogleGenerativeAI(api_key=GOOGLE_API_KEY, model="gemini-1.5-flash", temperature=1)
-    parser = StrOutputParser()
+retriever = vectorstore.as_retriever(search_type="mmr", search_kwargs={"k": 3, "lambda_mult": 1})
+llm = ChatGoogleGenerativeAI(api_key=GOOGLE_API_KEY, model="gemini-1.5-flash", temperature=1)
+parser = StrOutputParser()
 
 # Prompt template
 prompt = ChatPromptTemplate.from_messages([