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  1. ,
    via Stack Overflow by Rasel

    Your package name in the manifest is as com.google.android.gm and activity name as com.android.mail.compose.ComposeActivity, making a mismatch between the package and activity name. Your activity class name should start with the package name.

Solutions on the web

via Coderanch by simone giusti, 1 year ago
An error occurred while executing doInBackground()
via GitHub by billmeek
, 1 year ago
An error occurred while executing doInBackground()
via GitHub by Neamar
, 1 year ago
An error occurred while executing doInBackground()
via GitHub by sarvajeet294
, 9 months ago
An error occurred while executing doInBackground()
via GitHub by AndroidDeveloperLB
, 3 months ago
An error occurred while executing doInBackground()
via GitHub by Madis0
, 10 months ago
An error occurred while executing doInBackground()
android.content.ActivityNotFoundException: No Activity found to handle Intent { act=android.intent.action.VIEW dat=view-source:https://google.com flg=0x10000000 pkg=com.android.chrome }	at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1798)	at android.app.Instrumentation.execStartActivity(Instrumentation.java:1512)	at android.app.Activity.startActivityForResult(Activity.java:3917)	at android.support.v4.app.BaseFragmentActivityJB.startActivityForResult(BaseFragmentActivityJB.java:48)	at android.support.v4.app.FragmentActivity.startActivityForResult(FragmentActivity.java:75)	at android.app.Activity.startActivityForResult(Activity.java:3877)	at android.support.v4.app.FragmentActivity.startActivityForResult(FragmentActivity.java:871)	at android.app.Activity.startActivity(Activity.java:4200)	at android.app.Activity.startActivity(Activity.java:4168)	at com.alexander916.clashtrack.MainActivity$InternetConnection.doInBackground(MainActivity.java:31)	at com.alexander916.clashtrack.MainActivity$InternetConnection.doInBackground(MainActivity.java:14)	at android.os.AsyncTask$2.call(AsyncTask.java:295)	at java.util.concurrent.FutureTask.run(FutureTask.java:237)