EXCEPTION_ACCESS_VIOLATION (0xc0000005)

I’m getting this error randomly while playing the game I’ve created in Libgdx. Here’s the error log it generated: http://pastebin.java-gaming.org/410373b5b071d

Could anyone explain what it means and how I should try fixing it?

Edit: This is what it says in the console after it crashes: AL lib: (EE) alc_cleanup: 1 device not closed