```java
E/ExoPlayerImplInternal( 9673): Playback error
E/ExoPlayerImplInternal( 9673): com.google.android.exoplayer2.ExoPlaybackException: Source error
E/ExoPlayerImplInternal( 9673): at com.google.android.exoplayer2.ExoPlayerImplInternal.handleMessage(ExoPlayerImplInternal.java:580)
E/ExoPlayerImplInternal( 9673): at android.os.Handler.dispatchMessage(Handler.java:106)
E/ExoPlayerImplInternal( 9673): at android.os.Looper.loop(Looper.java:219)
E/ExoPlayerImplInternal( 9673): at android.os.HandlerThread.run(HandlerThread.java:67)
E/ExoPlayerImplInternal( 9673): Caused by: com.google.android.exoplayer2.upstream.HttpDataSource$HttpDataSourceException: Unable to connect
E/ExoPlayerImplInternal( 9673): at com.google.android.exoplayer2.upstream.DefaultHttpDataSource.open(DefaultHttpDataSource.java:346)
E/ExoPlayerImplInternal( 9673): at com.google.android.exoplayer2.upstream.StatsDataSource.open(StatsDataSource.java:84)
E/ExoPlayerImplInternal( 9673): at com.google.android.exoplayer2.source.ProgressiveMediaPeriod$ExtractingLoadable.load(ProgressiveMediaPeriod.java:1016)
E/ExoPlayerImplInternal( 9673): at com.google.android.exoplayer2.upstream.Loader$LoadTask.run(Loader.java:417)
E/ExoPlayerImplInternal( 9673): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
E/ExoPlayerImplInternal( 9673): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
E/ExoPlayerImplInternal( 9673): at java.lang.Thread.run(Thread.java:929)
E/ExoPlayerImplInternal( 9673): Caused by: javax.net.ssl.SSLHandshakeException: java.security.cert.CertPathValidatorException: Trust anchor for certification path not found.
E/ExoPlayerImplInternal( 9673): at com.android.org.conscrypt.ConscryptFileDescriptorSocket.startHandshake(ConscryptFileDescriptorSocket.java:231)
E/ExoPlayerImplInternal( 9673): at com.android.okhttp.internal.io.RealConnection.connectTls(RealConnection.java:196)
E/ExoPlayerImplInternal( 9673): at com.android.okhttp.internal.io.RealConnection.connectSocket(RealConnection.java:153)
E/ExoPlayerImplInternal( 9673): at com.android.okhttp.internal.io.RealConnection.connect(RealConnection.java:116)
E/ExoPlayerImplInternal( 9673): at com.android.okhttp.internal.http.StreamAllocation.findConnection(StreamAllocation.java:186)
E/ExoPlayerImplInternal( 9673): at com.android.okhttp.internal.http.StreamAllocation.findHealthyConnection(StreamAllocation.java:128)
E/ExoPlayerImplInternal( 9673): at com.android.okhttp.internal.http.StreamAllocation.newStream(StreamAllocation.java:97)
E/ExoPlayerImplInternal( 9673): at com.android.okhttp.internal.http.HttpEngine.connect(HttpEngine.java:289)
E/ExoPlayerImplInternal( 9673): at com.android.okhttp.internal.http.HttpEngine.sendRequest(HttpEngine.java:232)
E/ExoPlayerImplInternal( 9673): at com.android.okhttp.internal.huc.HttpURLConnectionImpl.execute(HttpURLConnectionImpl.java:465)
E/ExoPlayerImplInternal( 9673): at com.android.okhttp.internal.huc.HttpURLConnectionImpl.connect(HttpURLConnectionImpl.java:131)
E/ExoPlayerImplInternal( 9673): at com.android.okhttp.internal.huc.DelegatingHttpsURLConnection.connect(DelegatingHttpsURLConnection.java:90)
E/ExoPlayerImplInternal( 9673): at com.android.okhttp.internal.huc.HttpsURLConnectionImpl.connect(HttpsURLConnectionImpl.java:30)
E/ExoPlayerImplInternal( 9673): at com.google.android.exoplayer2.upstream.DefaultHttpDataSource.makeConnection(DefaultHttpDataSource.java:608)
E/ExoPlayerImplInternal( 9673): at com.google.android.exoplayer2.upstream.DefaultHttpDataSource.makeConnection(DefaultHttpDataSource.java:513)
E/ExoPlayerImplInternal( 9673): at com.google.android.exoplayer2.upstream.DefaultHttpDataSource.open(DefaultHttpDataSource.java:339)
E/ExoPlayerImplInternal( 9673): ... 6 more
E/ExoPlayerImplInternal( 9673): Caused by: java.security.cert.CertificateException: java.security.cert.CertPathValidatorException: Trust anchor for certification path not found.
E/ExoPlayerImplInternal( 9673): at com.android.org.conscrypt.TrustManagerImpl.verifyChain(TrustManagerImpl.java:674)
E/ExoPlayerImplInternal( 9673): at com.android.org.conscrypt.TrustManagerImpl.checkTrustedRecursive(TrustManagerImpl.java:551)
E/ExoPlayerImplInternal( 9673): at com.android.org.conscrypt.TrustManagerImpl.checkTrusted(TrustManagerImpl.java:507)
E/ExoPlayerImplInternal( 9673): at com.android.org.conscrypt.TrustManagerImpl.checkTrusted(TrustManagerImpl.java:426)
E/ExoPlayerImplInternal( 9673): at com.android.org.conscrypt.TrustManagerImpl.getTrustedChainForServer(TrustManagerImpl.java:354)
E/ExoPlayerImplInternal( 9673): at android.security.net.config.NetworkSecurityTrustManager.checkServerTrusted(NetworkSecurityTrustManager.java:94)
E/ExoPlayerImplInternal( 9673): at android.security.net.config.RootTrustManager.checkServerTrusted(RootTrustManager.java:89)
E/ExoPlayerImplInternal( 9673): at com.android.org.conscrypt.Platform.checkServerTrusted(Platform.java:224)
E/ExoPlayerImplInternal( 9673): at com.android.org.conscrypt.ConscryptFileDescriptorSocket.verifyCertificateChain(ConscryptFileDescriptorSocket.java:407)
E/ExoPlayerImplInternal( 9673): at com.android.org.conscrypt.NativeCrypto.SSL_do_handshake(Native Method)
E/ExoPlayerImplInternal( 9673):
```
