Failed to auto configure default logger context

[LoranceChen]

When I use sbt running hello-world project, it was occur:
Failed to auto configure default logger context
Reported exception:
ch.qos.logback.core.joran.spi.JoranException: Problem parsing XML document. See previously reported errors.
at ch.qos.logback.core.joran.event.SaxEventRecorder.recordEvents(SaxEventRecorder.java:67)
at ch.qos.logback.core.joran.GenericConfigurator.doConfigure(GenericConfigurator.java:134)
at ch.qos.logback.core.joran.GenericConfigurator.doConfigure(GenericConfigurator.java:99)

need I implement slf4j myself?

[LoranceChen]

Beside, port 9990 report a 404:
Some endpoints are only available when the correct dependencies are added to your class path.
For more information, please see the twitter-server docs or return to /admin.

[LoranceChen]

The reason is logback.xml on line 28. Please remove the extra "<" character. Maybe fixed now.

[taylorleese]

See #285.