galaxy s21 ultra “Test Application” notification

I traded in my s20 ultra for the 21 ultra and now whenever I connect my S21 to the car charger cord, I get a "test Application" notification. It says "No installed apps work with this USB accessory. Learn more about this accessory at.." and then it gives the web address for android dot com. The phone also barely charges when connected to the car even though fast charging is turned on. I never had this issue with the s20 and my car. How do I get rid of thIs notification? i’ve visited the android site too and cant find anything on it to clue me in as to what to do.

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