Error running second Activity: The activity must be exported or contain an intent-filte

Android Studio編譯沒問題，但在虛擬機上調試出現「Error running second Activity: The activity must be exported or contain an intent-filter」 筆者運行環境：MacOs Catalina ; Android Studio 經查閱資料和實踐只需在AndroidManifest.xml 中，所想要運行的a

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