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Attempt to invoke virtual method 'void android.app.ProgressDialog.dismiss()' on a null object reference
java.lang.NullPointerException: Attempt to invoke virtual method 'void android.app.ProgressDialog.dismiss()' on a null object reference	at com.usabilla.sdk.ubform.ui.FeedbackFormActivity.dismissDialog(SourceFile:227)	at com.usabilla.sdk.ubform.ui.FeedbackFormActivity.access$600(SourceFile:34)	at com.usabilla.sdk.ubform.ui.FeedbackFormActivity$getFormTask.onPostExecute(SourceFile:299)	at com.usabilla.sdk.ubform.ui.FeedbackFormActivity$getFormTask.onPostExecute(SourceFile:265)	at android.os.AsyncTask.finish(AsyncTask.java:651)	at android.os.AsyncTask.access$500(AsyncTask.java:180)	at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:668)	at android.os.Handler.dispatchMessage(Handler.java:102)	at android.os.Looper.loop(Looper.java:158)	at android.app.ActivityThread.main(ActivityThread.java:7225)	at java.lang.reflect.Method.invoke(Method.java)	at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230)	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120)