[FTC]: Error: Unable to find a hardware device with the name ""

Hi! I am part a rookie FTC team and working on the programming of our robot. We are using the MIT app inventor to program, but every time we try to deploy our code to the ZTE Speed phone, we get the following error from the phone:

Error: Unable to find a hardware device with the name ""

What could be causing this? My apologies, this is our first time working with FTC hardware, so I am not entirely sure what to do here.

The first idea I have would be that you did not give your device a name on this window:







The other thing you have to do is set up your devices in the robot phone. That is done under the settings. You have to set up the devices and give them names the devices have to be named the same as the code in App Inventor.