Missing music in some packaged launched in UE4

Question

Sometimes, my sound are missing in game. When I change level it's back. But I have no problem issues in logs :(

How can I debug it? When I play in editor the sound is okay, only in packaged or standalone build.

UE4.25

WWISE 2021.

 

Edit:
I found something like this in profiler (but it happends very rare and then music is missing)

"Media was not loaded for this source"

Answer 1

After getting similar issues (random "Media was not loaded" errors) I've concluded that Event Based Packaging was the cause. EBP is a new feature added about a year ago which seems to be totally unreliable and unusable as of this writing. If you might have it on, I would try turning it off in Unreal Project Settings and going back to the old 2019-and-earlier Soundbanks workflow.