Minecraft 1.8 server crash

[SEVERE] Unexpected exception
java.lang.StackOverflowError
	at hm.b(SourceFile:118)
	at hm.c(SourceFile:122)
	at df.a(SourceFile:273)
	at bt.a(SourceFile:48)
	at df.a(SourceFile:108)
	at df.b(SourceFile:203)
	at df.a(SourceFile:117)
	at df.b(SourceFile:203)
	at df.a(SourceFile:117)
	at df.b(SourceFile:203)
	at df.a(SourceFile:117)
	at df.b(SourceFile:203)
	at df.a(SourceFile:117)
...