I download the SDK and try to play with it, but the demo won't run. <img width="420" alt="screen shot 2019-02-12 at 17 09 55" src="https://user-images.githubusercontent.com/20881082/52674474-5207a080-2ee9-11e9-85f3-62b1a612ebd1.png"> Is there anything I need to fix to run the project?