The streaming application may be witnessing loading failures. To get rid of them, you can power-cycle the TV. Turn it off and carefully take out the plug. Hold the “Power” key available on the TV’s remote for some seconds. Then detach every device connected to it. After waiting for a few minutes, you can plug in everything. When you run Hulu now, loading errors shouldn’t occur. Hence, the app should work.
Additional information can be gained on: https://www.errorsdoc.com/software/hulu-wont-load/