I have problem of crash in my App involved with Manifest

I have used 2018.3.14f1 version, succeeded in Android Build without any problems.

However, when I ran APK file on the device, a Crash came up at the beginning of the running application since last week.

As a result of checking logCat, a message was shown below.

But I did not modify Plugin Source including Android Manifest. I suspect that it is a Build Tool problem. It is hard to fix it, I need help.

I am also having problems to open main project after opening another project because it cannot load Android Platform when I open project at first after booting Window.