Update rag_chain.py

rag_chain.py

@@ -3,10 +3,11 @@ from langchain_groq import ChatGroq
 
 
 def build_rag_chain(vectorstore, groq_api_key):
-    llm = Groq(
-        api_key=groq_api_key,
-        model_name="llama3-8b-8192"
-    )
+    llm = ChatGroq(
+    api_key=groq_api_key,
+    model="llama3-8b-8192"
+)
+
 
     return RetrievalQA.from_chain_type(
         llm=llm,