java.lang.NullPointerException: Attempt to invoke virtual method 'void com.microsoft.bing.speech.AudioStream.close()' on a null object reference

[fdzx0707fh]

05-16 09:53:17.058 9785-9863/com.jc_inter.translationtrip E/AndroidRuntime: FATAL EXCEPTION: SpeechRecognitionService Background Worker Thread
Process: com.jc_inter.translationtrip, PID: 9785
java.lang.NullPointerException: Attempt to invoke virtual method 'void com.microsoft.bing.speech.AudioStream.close()' on a null object reference
at com.microsoft.cognitiveservices.speechrecognition.DataRecognitionClient.endAudioWorker(DataRecognitionClient.java:224)
at com.microsoft.cognitiveservices.speechrecognition.DataRecognitionClient.access$200(DataRecognitionClient.java:19)
at com.microsoft.cognitiveservices.speechrecognition.DataRecognitionClient$3.run(DataRecognitionClient.java:123)
at com.microsoft.cognitiveservices.speechrecognition.WorkQueue.threadWorker(WorkQueue.java:64)
at com.microsoft.cognitiveservices.speechrecognition.WorkQueue$1.run(WorkQueue.java:31)

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  how to solve this problem?