Bebe Rexha, a singer, got in trouble at the airport because she spoke Albanian, her parents' language, to a guard.
The guard didn't understand her, and Bebe couldn't get through security because she wasn't speaking German or English.
Bebe thinks she was treated unfairly, but some people think she should have known to speak German at a German airport.
The airline, Lufthansa, is looking into what happened and wants to make sure everyone is treated fairly at their airports.
