Пытаюсь запустить созданный apk на ionic framework через эмулятор, но выдает ошибку?

Question

[_ umr]

Текст ошибки. Как исправить?

Error: Error executing "adb -s emulator-5584 install -r 
"/home/username/myApp/platforms/android/build/outputs/apk/android-release-unsigned.apk"": Failed to install 
/home/username/myApp/platforms/android/build/outputs/apk/android-release-unsigned.apk: Failure 
[INSTALL_PARSE_FAILED_NO_CERTIFICATES: Package /data/app/vmdl460824485.tmp/base.apk has no certificates at entry
 AndroidManifest.xml]