Update app.py

app.py

@@ -15,7 +15,16 @@ from langchain.chains import LLMChain
 
 groq_api_key='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'
 
-llm = ChatGroq(model="gemma2-9b-it",api_key=groq_api_key)
+llm = None
+
+def load_model():
+    global llm
+    if llm is None:
+        llm=ChatGroq(model="gemma2-9b-it",api_key=groq_api_key)
+    return llm
+
+
+llm = load_model()
 
 from langchain_core.prompts import PromptTemplate