java.lang.RuntimeException: Unable to start activity ComponentInfo{com.entitcs.office_attendance/com.entitcs.office_attendance.signup_activities.Signup_Mobile}: android.content.ActivityNotFoundException: No Activity found to handle null
	at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3707)
	at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3864)
	at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:103)
	at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
	at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
	at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2253)
	at android.os.Handler.dispatchMessage(Handler.java:106)
	at android.os.Looper.loopOnce(Looper.java:201)
	at android.os.Looper.loop(Looper.java:288)
	at android.app.ActivityThread.main(ActivityThread.java:7870)
	at java.lang.reflect.Method.invoke(Native Method)
	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:548)
	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1009)
Caused by: android.content.ActivityNotFoundException: No Activity found to handle null
	at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:2117)
	at android.app.Activity.startIntentSenderForResultInner(Activity.java:5670)
	at android.app.Activity.startIntentSenderForResult(Activity.java:5636)
	at androidx.activity.ComponentActivity.startIntentSenderForResult(Unknown Source:0)
	at com.entitcs.office_attendance.signup_activities.Signup_Mobile.onCreate(Unknown Source:72)
	at android.app.Activity.performCreate(Activity.java:8054)
	at android.app.Activity.performCreate(Activity.java:8034)
	at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1341)
	at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3688)
	... 12 more