碰到一个appium连接手机app的时候的报错问题，求解

An unknown server-side error occurred while processing the command. Original error: Cannot start the 'com.tvt.superliveplus' application. Visit https://github.com/appium/appium/blob/master/docs/en/writing-running-appium/android/activity-startup.md for troubleshooting. Original error: Error executing adbExec. Original error: 'Command 'D:\\工具包\\android\\platform-tools\\adb.exe -P 5037 -s R5CRA0VCV6B shell am start -W -n com.tvt.superliveplus/com.tvt.network.MainViewActivity -S' exited with code 255'; Stderr: 'Exception occurred while executing 'start': java.lang.SecurityException: Permission Denial: starting Intent { flg=0x10000000 cmp=com.tvt.superliveplus/com.tvt.network.MainViewActivity } from null (pid=11056, uid=2000) not exported from uid 10302 at com.android.server.wm.ActivityStackSupervisor.checkStartAnyActivityPermission(ActivityStackSupervisor.java:1344) at com.android.server.wm.ActivityStarter.executeRequest(ActivityStarter.java:1260) at com.android.server.wm.ActivityStarter.execute(ActivityStarter.java:894) at com.android.server.wm.ActivityTaskManagerService.startActivityAndWait(ActivityTaskManagerService.java:1962) at com.android.server.am.ActivityManagerService.startActivityAndWait(ActivityManagerService.java:4536) at com.android.server.am.ActivityManagerShellCommand.runStartActivity(ActivityManagerShellCommand.java:564) at com.android.server.am.ActivityManagerShellCommand.onCommand(ActivityManagerShellCommand.java:192) at android.os.BasicShellCommandHandler.exec(BasicShellCommandHandler.java:98) at android.os.ShellCommand.exec(ShellCommand.java:44) at com.android.server.am.ActivityManagerService.onShellCommand(ActivityManagerService.java:13117) at android.os.Binder.shellCommand(Binder.java:965) at android.os.Binder.onTransact(Binder.java:839) at android.app.IActivityManager$Stub.onTransact(IActivityManager.java:6026) at com.android.server.am.ActivityManagerService.onTransact(ActivityManagerService.java:3628) at android.os.Binder.execTransactInternal(Binder.java:1195) at android.os.Binder.execTransact(Binder.java:1159)'; Code: '255'