Why is my apk detected as a malicious file ?

I'm currently working on a small android game, everyt$$anonymous$$ng was good and working fine until I added google play games services. I have implemented the google play authentication and the leader-board functions in my game, these services are working completely fine and the game also works fine. But the apk is detected as a Malicious or harmful file in avast security and after installing it is detected as a malicious software.

It does not detect as a malicious or harmful file or software when the google play services authentication code is not functional.

I have published the game on the play store as an open beta as of right now but the problem still exists. I have tried to search for the problem but was not able to find anyt$$anonymous$$ng similar to t$$anonymous$$s. I'm using Unity 2019.2.9f1, if it matters.

If anyone knows what might be causing t$$anonymous$$s please let me know.

Thank you.

Here's my code for authenticating (t$$anonymous$$s works fine and authenticates the user) :

 public void AuthenticateUser()
         {
     
             PlayGamesClientConfiguration config = new 
             PlayGamesClientConfiguration.Builder().Build();
             PlayGamesPlatform.InitializeInstance(config);
             PlayGamesPlatform.Activate();
             Social.localUser.Authenticate((bool success) =>
             {
                 if (success == true)
                 {
                     Debug.Log("logged into Google Play");
                     ResponseText.text= Social.localUser.userName ;
                 }
                 else
                 {
                     Debug.Log("Login to Google Play Failed");
                     ResponseText.text= "Login Failed";
                 }
     
             }
             );
     
         }