android studio logcat do not show anything

In Android Studio one of the most used tools is Logcat. So, this is a very useful component for the app development because this Logcat dumps a lot of system messages and these messages are actually thrown by the emulator. Then, Logcat Window is going to help you to debug the output by collecting and viewing all the messages that your emulator throws. Suppose, you are running your application and the program crashes, unfortunately. Logcat Window is the place where various messages can be printed when an application runs.

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Android studio logcat do not show anything