React Native Emulator无法在Windows10中启动

Question

有人知道如何解决此问题吗？

这是确切的命令，在Windows 10中会显示结果。

react-native run-android

> info Running jetifier to migrate libraries to AndroidX. You can
> disable it using "--no-jetifier" flag. Jetifier found 864 file(s) to
> forward-jetify. Using 4 workers... info Starting JS server... 'adb' is
> not recognized as an internal or external command, operable program or
> batch file. info Launching emulator... error Failed to launch
> emulator. Reason: No emulators found as an output of `emulator
> -list-avds`. warn Please launch an emulator manually or connect a device. Otherwise app may fail to launch.

这是实际的屏幕截图。