added the fix for pinecone db connection

app.py

@@ -23,6 +23,12 @@ import pinecone
 index_name = "qa_demo"
 
 
+# connect to pinecone environment
+pinecone.init(
+    api_key=st.secrets["pinecone_apikey"],
+    # environment="us-west1-gcp"
+)
+index_name = "qa-demo"
 
 preprocessor = PreProcessor(
     clean_empty_lines=True,