I got a 703 error code

I imported a sound and whenever I try to play it on the companion, it shows a Error 703, unable to play sound whatever.mp3

This didn't do this for any other of the sounds i imported, i dunno why it does that now

Please show your blocks so that other people know what you are doing. To download a high-quality image of your blocks, right-click and select Download Blocks as Image.

Where is the MP3 file? In the Assets (Media)? ASD?

it actually started working out of the blue today