When the district court fails to either order a Pre-Sentence Report or make explicit on-the-record findings as to why a Pre-Sentence Report is unnecessary, whether the defendant may rely on the district court's error alone to show prejudice under plain error review when the record is silent as to what the district court might have done had a Pre-Sentence Report been prepared?

When the district court fails to either order a Pre-Sentence Report or make explicit on-the-record findings as to why a Pre-Sentence Report is unnecessary, whether the defendant may rely on the district court's error alone to show prejudice under plain error review when the record is silent as to what the district court might have done had a Pre-Sentence Report been prepared?