App fails to create video at the end

[cruiserkashima]

At the very end of the code, an error that says
MediaException: MEDIA_UNAVAILABLE : C:\Users\Siriu\Desktop\epic memes\temp\tempoutput.mp4 (The system cannot find the file specified)
at javafx.scene.media.Media.(Media.java:407)
at ytpplusui.FXMLController$1.run(FXMLController.java:258)
pops up. Is there a way to fix this?