My mc Crashes after launching it

Mc says this after it crashes

 

AL lib: (EE) SetChannelMap: Failed to match front-center channel (2) in channel map <log4j:Event logger="dgr" timestamp="1542580198964" level="INFO" thread="Thread-2"> <log4j:Message><![CDATA[OpenAL initialized.]]></log4j:Message> </log4j:Event>