Runtime Exception

[reaurr]

I downloaded project and just run. After running program give exception to me.

java.lang.RuntimeException: Can't create handler inside thread that has not called Looper.prepare()
at android.os.Handler.(Handler.java:200)
at android.os.Handler.(Handler.java:114)
at android.app.Dialog.(Dialog.java:121)
at android.app.Dialog.(Dialog.java:166)
at android.support.v7.app.AppCompatDialog.(AppCompatDialog.java:43)
at android.support.v7.app.AlertDialog.(AlertDialog.java:95)
at android.support.v7.app.AlertDialog$Builder.create(AlertDialog.java:927)
at pl.hypeapp.endoscope.StartStreamActivity.logError(StartStreamActivity.java:261)
at pl.hypeapp.endoscope.StartStreamActivity.onError(StartStreamActivity.java:205)
at net.majorkernelpanic.streaming.rtsp.RtspServer.postError(RtspServer.java:300)
at net.majorkernelpanic.streaming.rtsp.RtspServer$WorkerThread.run(RtspServer.java:410)
10-30 19:53:57.982 28717-29422/pl.hypeapp.endoscope I/RtspServer: RTSP server stopped !