Exception in thread "main" org.apache.commons.lang.UnhandledException: org.apache.commons.lang.UnhandledException: while parsing a block mapping
    at org.yaml.snakeyaml.parser.ParserImpl$ParseBlockMappingKey.produce(ParserImpl.java:575)
    at org.yaml.snakeyaml.parser.ParserImpl.peekEvent(ParserImpl.java:162)
    at org.yaml.snakeyaml.parser.ParserImpl.checkEvent(ParserImpl.java:147)
    at org.yaml.snakeyaml.composer.Composer.composeMappingNode(Composer.java:227)
    at org.yaml.snakeyaml.composer.Composer.composeNode(Composer.java:159)