Update app.py

app.py

@@ -81,7 +81,7 @@ def handle_userinput(user_question):
                 "{{MSG}}", message.content), unsafe_allow_html=True)
 
 def get_text_file(docs):
-    text = f.read()
+    text = docs.read().decode("utf-8")
     return text
 
 def get_csv_file(docs):