November 28, 2019 | 8:35am

Gabrielle Union spoke out Tuesday amid the fallout from her “America’s Got Talent” exit last week, telling her 4.2 million Twitter followers she’s “humbled and thankful.”

“So many tears, so much gratitude. THANK YOU!” the 47-year-old began. “Just when you feel lost, adrift, alone… you got me up off the ground. Humbled and thankful, forever.”

Union’s tweet followed reports published Wednesday detailing alleged toxicity on the set of the NBC talent series. Union is said to have brought up racially insensitive incidents to producers, according to Variety. She and fellow judge Julianne Hough, who was also ousted, reportedly received “excessive notes on their physical appearance,” the outlet also noted.

A show source addressed the allegations Wednesday to Page Six, stating, “Ensuring a safe environment is so important to the show. Anytime someone comes forward and has issues, we take things very seriously.”

Union’s husband, Dwyane Wade, defended her Wednesday with a message on social media.

“So when i got the news that my wife was being fired—my first question was obviously why!? Iam still waiting on a good answer to that question. But if anyone know