Donald Trump recently got the endorsement of his former Attorney General Bill Barr, but that didn’t stop the ex-president from lashing out at his own appointee Wednesday evening. Barr, a lifelong Republican, served as Trump’s second attorney general from 2019 to 2020. Barr then resigned over disagreements surrounding the former president’s 2020 election interference claims. But about a week ago, he confirmed he would be voting “for the Republican ticket” despite Trump being the nominee. ALSO READ: ‘Fraudulent’: Trump tormentor Lincoln Project loses big money in cybertheft scheme Trump raised t…