Correct streamlit file upload

Correct streamlit file upload process again

app.py

@@ -12,7 +12,7 @@ uploaded_file = st.file_uploader("Upload an audio of classroom activity to analy
 supported_file_types = ['.wav','.mp3','.mp4']
 
 if uploaded_file is not None:
-    if not uploaded_file.name.endswith(supported_file_types):
+    if not uploaded_file.name[0].endswith(supported_file_types):
         st.error('File must be of type: {}'.format(supported_file_types))
         uploaded_file = st.empty()
     else: