Cache operation error

Sometimes when the games start I got this error:
failed to load resource: net::ERR_CACHE_OPERATION_NOT_SUPPORTED
Error: No cached audio asset with the key “soundsprite”

It’s relative to the audiosprite files. It seems that the gmaes fails to load resource from cache and never start to load it from server.

the games loads all the resourced in the Preload Scene, so I assume that after the create all the assets are loaded. What i’m doing wrong?
thanks a lot

Seems like a browser problem. How big is the file?

it likes 2Mb