"Initial Landing Page = “No data”, "Initial Referrer" = “DIRECT” suddenly 45% of my traffic

Starting last week 2/18/2024 we started seeing about 45% of our traffic with an "Initial Landing Page = “No data”, "Initial Referrer" = “DIRECT”. We didn’t make any changes on our side, and can’t account for this unexpected change. Has anyone else seen this? Or can anyone explain what might be happening?