"Flappy Bird" com erros de Broken Pipe

Ultimamente o app que venho desenvolvendo apresenta os seguintes erros, alguém poderia pelo menos me dar um direcionamento?
Estou usando a libgdx para desenvolver o app. Grato.

Seguem os erros no LogCat:

18:53:55.404 1696-1696/com.mygdx.flappybird E/dalvikvm: Could not find class 'android.media.AudioAttributes$Builder', referenced from method com.badlogic.gdx.backends.android.AndroidAudio.
06-13 18:53:55.824 1696-1696/com.mygdx.flappybird E/EGL_emulation: tid 1696: eglSurfaceAttrib(1210): error 0x3009 (EGL_BAD_MATCH)
06-13 18:53:55.828 1696-1696/com.mygdx.flappybird E/OpenGLRenderer: Getting MAX_TEXTURE_SIZE from GradienCache
06-13 18:53:55.828 1696-1696/com.mygdx.flappybird E/OpenGLRenderer: MAX_TEXTURE_SIZE: 8192
06-13 18:53:55.840 1696-1696/com.mygdx.flappybird E/OpenGLRenderer: Getting MAX_TEXTURE_SIZE from Caches::initConstraints()
06-13 18:53:55.840 1696-1696/com.mygdx.flappybird E/OpenGLRenderer: MAX_TEXTURE_SIZE: 8192
06-13 18:55:05.195 1696-1740/com.mygdx.flappybird E/eglCodecCommon: writeFully: failed: Broken pipe
06-13 18:55:05.195 1696-1740/com.mygdx.flappybird E/eglCodecCommon: writeFully: failed: Broken pipe
06-13 18:55:05.195 1696-1740/com.mygdx.flappybird E/eglCodecCommon: writeFully: failed: Broken pipe
06-13 18:55:05.711 1696-1740/com.mygdx.flappybird E/eglCodecCommon: writeFully: failed: Broken pipe
06-13 18:55:05.711 1696-1740/com.mygdx.flappybird E/eglCodecCommon: writeFully: failed: Broken pipe
06-13 18:55:05.711 1696-1740/com.mygdx.flappybird E/eglCodecCommon: writeFully: failed: Broken pipe
06-13 18:55:05.711 1696-1740/com.mygdx.flappybird E/eglCodecCommon: writeFully: failed: Broken pipe
06-13 18:55:05.875 1696-1740/com.mygdx.flappybird E/eglCodecCommon: writeFully: failed: Broken pipe
06-13 18:55:05.911 1696-1740/com.mygdx.flappybird E/eglCodecCommon: writeFully: failed: Broken pipe
06-13 18:55:05.979 1696-1740/com.mygdx.flappybird E/eglCodecCommon: writeFully: failed: Broken pipe
06-13 18:55:06.011 1696-1740/com.mygdx.flappybird E/eglCodecCommon: writeFully: failed: Broken pipe
06-13 18:55:06.011 1696-1740/com.mygdx.flappybird E/eglCodecCommon: writeFully: failed: Broken pipe
06-13 18:55:06.011 1696-1740/com.mygdx.flappybird E/eglCodecCommon: writeFully: failed: Broken pipe
06-13 18:55:06.011 1696-1740/com.mygdx.flappybird E/eglCodecCommon: writeFully: failed: Broken pipe
06-13 18:55:06.071 1696-1740/com.mygdx.flappybird E/eglCodecCommon: writeFully: failed: Broken pipe
06-13 18:55:06.079 1696-1740/com.mygdx.flappybird E/eglCodecCommon: writeFully: failed: Broken pipe
06-13 18:55:06.079 1696-1740/com.mygdx.flappybird E/eglCodecCommon: writeFully: failed: Broken pipe
06-13 18:55:06.079 1696-1740/com.mygdx.flappybird E/eglCodecCommon: writeFully: failed: Broken pipe
06-13 18:55:06.079 1696-1740/com.mygdx.flappybird E/eglCodecCommon: writeFully: failed: Broken pipe
06-13 18:55:06.187 1696-1740/com.mygdx.flappybird E/eglCodecCommon: writeFully: failed: Broken pipe
06-13 18:55:06.187 1696-1740/com.mygdx.flappybird E/eglCodecCommon: writeFully: failed: Broken pipe
06-13 18:55:06.187 1696-1740/com.mygdx.flappybird E/eglCodecCommon: writeFully: failed: Broken pipe
06-13 18:55:06.187 1696-1740/com.mygdx.flappybird E/eglCodecCommon: writeFully: failed: Broken pipe
06-13 18:55:06.187 1696-1740/com.mygdx.flappybird E/eglCodecCommon: writeFully: failed: Broken pipe
06-13 18:55:06.187 1696-1740/com.mygdx.flappybird E/eglCodecCommon: writeFully: failed: Broken pipe
06-13 18:55:06.187 1696-1740/com.mygdx.flappybird E/eglCodecCommon: writeFully: failed: Broken pipe
06-13 18:55:06.187 1696-1740/com.mygdx.flappybird E/eglCodecCommon: writeFully: failed: Broken pipe
06-13 18:55:06.227 1696-1740/com.mygdx.flappybird E/eglCodecCommon: writeFully: failed: Broken pipe
06-13 18:55:06.271 1696-1740/com.mygdx.flappybird E/eglCodecCommon: writeFully: failed: Broken pipe
06-13 18:55:06.271 1696-1740/com.mygdx.flappybird E/eglCodecCommon: writeFully: failed: Broken pipe
06-13 18:55:06.271 1696-1740/com.mygdx.flappybird E/eglCodecCommon: writeFully: failed: Broken pipe
06-13 18:55:06.279 1696-1740/com.mygdx.flappybird E/eglCodecCommon: writeFully: failed: Broken pipe
06-13 18:55:06.283 1696-1740/com.mygdx.flappybird E/eglCodecCommon: writeFully: failed: Broken pipe
06-13 18:55:06.283 1696-1740/com.mygdx.flappybird E/eglCodecCommon: writeFully: failed: Broken pipe
06-13 18:55:06.283 1696-1740/com.mygdx.flappybird E/eglCodecCommon: writeFully: failed: Broken pipe
06-13 18:55:06.283 1696-1740/com.mygdx.flappybird E/eglCodecCommon: writeFully: failed: Broken pipe
06-13 18:55:06.395 1696-1740/com.mygdx.flappybird E/eglCodecCommon: writeFully: failed: Broken pipe
06-13 18:55:06.399 1696-1740/com.mygdx.flappybird E/eglCodecCommon: writeFully: failed: Broken pipe
06-13 18:55:06.751 1696-1740/com.mygdx.flappybird E/AndroidRuntime: FATAL EXCEPTION: GLThread 99
Process: com.mygdx.flappybird, PID: 1696
java.lang.IllegalStateException: SpriteBatch.begin must be called before draw.
at com.badlogic.gdx.graphics.g2d.SpriteBatch.draw(SpriteBatch.java:558)
at com.badlogic.gdx.graphics.g2d.BitmapFontCache.draw(BitmapFontCache.java:236)
at com.badlogic.gdx.graphics.g2d.BitmapFont.draw(BitmapFont.java:196)
at com.mygdx.flappybird.FlappyBird.render(FlappyBird.java:100)
at com.badlogic.gdx.backends.android.AndroidGraphics.onDrawFrame(AndroidGraphics.java:494)
at android.opengl.GLSurfaceView$GLThread.guardedRun(GLSurfaceView.java:1523)
at android.opengl.GLSurfaceView$GLThread.run(GLSurfaceView.java:1240)