I've been trying to create a Wear AVD without luck. I first tried to create one for Platform 28. I got an error message that I needed the 64 bit version for API 28+. I couldn't see that available for download in the SDK manager. Then I downloaded the Platform 26 version of Android Wear with the SDK manager. Now it gives me the error message "Device definition not found: Wear Square." I tried the circular too, and got the same message. What am I missing?