Applying echo effect component to an audio source which streams audio from a URL throws warning

2. How we can reproduce it using the example you attached
- Launch the attached project
- Click on the audio source (note that the stream from url script is attached to it) and an echo effect component is added
- Click on play

Note that in the console the following warning is thrown:
Only custom filters can be played. Please add a custom filter or an audioclip to the audiosource (Audio Source).