Georgia is one of five states that uses vote-counting machines with no paper trail. On May 21, U.S. District Court Judge Amy Totenberg issued a 61-page opinion in Curling v Raffensperger, clearing the way for a trial on whether the Georgia machines violate the U.S. Constitution because they may not guarantee an accurate vote count.
Footnote 38 of the opinion acknowledges that the Georgia law was changed last month to require a new type of vote-counting machine that has an audit trail. But the state has not yet chosen a new type of machine, and elections later in 2019 will be using the old machines. Thanks to Rick Hasen for the link.