android studio 真机运行报错 虚拟机不会

Error while executing: am startservice com.example.androiddemo/com.android.tools.fd.runtime.InstantRunService
Starting service: Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] cmp=com.example.androiddemo/com.android.tools.fd.runtime.InstantRunService }
Error: Not found; no service started.