BungeeCord Error

04:57:08 [SEVERE] Exception in thread "main"
04:57:08 [SEVERE] java.lang.RuntimeException: Invalid configuration encountered - this is a configuration error
and NOT a bug! Please attempt to fix the error or see https://www.spigotmc.org/ for help.
04:57:08 [SEVERE]     at net.md_5.bungee.conf.YamlConfig.load(YamlConfig.java:73)
04:57:08 [SEVERE]     at net.md_5.bungee.conf.Configuration.load(Configuration.java:71)
04:57:08 [SEVERE]     at net.md_5.bungee.BungeeCord.start(BungeeCord.java:273)
04:57:08 [SEVERE]     at net.md_5.bungee.BungeeCordLauncher.main(BungeeCordLauncher.java:62)
04:57:08 [SEVERE]     at net.md_5.bungee.Bootstrap.main(Bootstrap.java:15)
04:57:08 [SEVERE] Caused by: mapping values are not allowed here
 in 'reader', line 53, column 15:
      onedottwelve:
                  ^
04:57:08 [SEVERE]     at org.yaml.snakeyaml.scanner.ScannerImpl.fetchValue(ScannerImpl.java:870)
04:57:08 [SEVERE]     at org.yaml.snakeyaml.scanner.ScannerImpl.fetchMoreTokens(ScannerImpl.java:358)
04:57:08 [SEVERE]     at org.yaml.snakeyaml.scanner.ScannerImpl.checkToken(ScannerImpl.java:227)
04:57:08 [SEVERE]     at org.yaml.snakeyaml.parser.ParserImpl$ParseBlockMappingKey.produce(ParserImpl.java:558)
04:57:08 [SEVERE]     at org.yaml.snakeyaml.parser.ParserImpl.peekEvent(ParserImpl.java:158)
04:57:08 [SEVERE]     at org.yaml.snakeyaml.parser.ParserImpl.checkEvent(ParserImpl.java:148)
04:57:08 [SEVERE]     at org.yaml.snakeyaml.composer.Composer.composeMappingNode(Composer.java:217)
04:57:08 [SEVERE]     at org.yaml.snakeyaml.composer.Composer.composeNode(Composer.java:144)
04:57:08 [SEVERE]     at org.yaml.snakeyaml.composer.Composer.getNode(Composer.java:85)
04:57:08 [SEVERE]     at org.yaml.snakeyaml.composer.Composer.getSingleNode(Composer.java:108)
04:57:08 [SEVERE]     at org.yaml.snakeyaml.constructor.BaseConstructor.getSingleData(BaseConstructor.java:141)
04:57:08 [SEVERE]     at org.yaml.snakeyaml.Yaml.loadFromReader(Yaml.java:525)
04:57:08 [SEVERE]     at org.yaml.snakeyaml.Yaml.load(Yaml.java:453)
04:57:08 [SEVERE]     at net.md_5.bungee.conf.YamlConfig.load(YamlConfig.java:70)
04:57:08 [SEVERE]     ... 4 more