Was it structural error that violated Petitioner's Sixth Amendment autonomy rights when Petitioner's court-appointed counsel conceded his client's guilt to the jury after Petitioner had entered a plea of not guilty?

QUESTION(S) PRESENTED : Was it "structural error" that violated Petitioner's . Sixth Amendment autonomy rights when Petitioner's * court appointed counsel conceeded his client's guilt to the jury after Petitioner had entered a plea of not guilty? ‘ “Counsel informed the jury: "We know who committed the shooting. Juan Domingo Velazquez. We agree with Mr. Windham the prosecutor". (R.R. V 93,94). bay cd ,