BungeeCord server crashing

15.04 12:40:41 [Server] SEVERE at org.yaml.snakeyaml.parser.ParserImpl$ParseBlockMappingKey.produce(ParserImpl.java:570) 15.04 12:40:41 [Server] SEVERE at org.yaml.snakeyaml.parser.ParserImpl.peekEvent(ParserImpl.java:158) 15.04 12:40:41 [Server] SEVERE at org.yaml.snakeyaml.parser.ParserImpl.checkEvent(ParserImpl.java:143) 15.04 12:40:41 [Server] SEVERE at org.yaml.snakeyaml.composer.Composer.composeMappingNode(Composer.java:226) 15.04 12:40:41 [Server] SEVERE at...

BungeeCord server crashing