建置環境跟產一個專案都正常，但 當我在VSCode終端機上面輸入 react-native run-android 指令後按下Enter
錯誤訊息出現
react-native : File C:\Users\User\AppData\Roaming\npm\react-native.ps1 cannot be loaded. The
file C:\Users\User\AppData\Roaming\npm\react-native.ps1 is not digitally signed. You cannot
run this script on the current system. For more information about running scripts and setti
ng execution policy, see about_Execution_Policies at https:/go.microsoft.com/fwlink/?LinkID=
135170.
At line:1 char:1

• react-native run-android

•   + CategoryInfo          : SecurityError: (:) [], PSSecurityException
    + FullyQualifiedErrorId : UnauthorizedAccess
  
  

目前這個專案init出來後，在專案資料夾跟目錄沒有Android跟ios的子資料夾，不知道哪個環節出了錯誤，在終端機上輸入 npm start是可以自動在瀏覽器上開出畫面...

不知道錯在哪裡，在網路上也找不到跟我一樣類似的問題，請IT網友們幫幫小弟！