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This exception has no message.
java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String android.content.Context.getPackageName()' on a null object reference	at android.preference.PreferenceManager.getDefaultSharedPreferencesName(PreferenceManager.java:383)	at android.preference.PreferenceManager.getDefaultSharedPreferences(PreferenceManager.java:378)	at com.sovran.sov2fa.AccountsActivity.(AccountsActivity.java:20)