function onLoadingError(res) {
	failureLoadedAssets[res.src] = res;
	if (this.onError) {
		this.onError(res);
	}
	eventEmitter.emit(LOADER_ERROR, res);
	throw new Error("Failed loading resource " + res.src);
}
on error callback for image loading
@param {Asset} asset - asset that loaded with failure
@ignore