Update app.py

app.py

@@ -31,7 +31,7 @@ from langchain.text_splitter import RecursiveCharacterTextSplitter
 from langchain.memory import ConversationBufferMemory
 from langchain.prompts import PromptTemplate
 import joblib
-
+import nltk
 
 import nest_asyncio  # noqa: E402
 nest_asyncio.apply()
@@ -49,6 +49,12 @@ groq_api_key=os.getenv('GROQ_API_KEY')
 
 st.set_page_config(layout="wide")
 
+# Check and download the resource if it's not already available
+try:
+    nltk.data.find('taggers/averaged_perceptron_tagger')
+except LookupError:
+    nltk.download('averaged_perceptron_tagger')
+
 css = """
 <style>
     [data-testid="stAppViewContainer"] {