Update app.py

app.py

@@ -28,7 +28,7 @@ def getSession():
         + f"?warehouse={pars['warehouse']}&role={pars['role']}")
     db = SQLDatabase.from_uri(url)
     
-    os.environ["HUGGINGFACEHUB_API_TOKEN"]
+    os.environ["HUGGINGFACEHUB_API_TOKEN"] ='HUGGINGFACEHUB_API_TOKEN'
     llm = HuggingFaceHub(repo_id= "ravithejakandi/Sf-Arctic-Demo-Enu")
     chain = create_sql_query_chain(llm, db)
     return session, db, chain