Failed to run Flashback Server

[VireshS]

Not able to run the flashback server on Mac. Below are the logs when I try to start server. Finally it gets stuck at last line of these logs.

MacBook-Pro:flashback SinghViresh$ ./startAdminServer.sh -port 1234
Starting a new Gradle Daemon for this build (subsequent builds will be faster).
Parallel execution with configuration on demand is an incubating feature.
Building project 'test-util'
Building project 'smartproxy'
Building project 'netty'
:flashback-core-impl:compileJava
:flashback-netty:processResources
:mitm:compileJava
:flashback-admin:processResources
:flashback-smartproxy:processResources UP-TO-DATE
:flashback-admin:processResources UP-TO-DATE
:flashback-netty:processResources UP-TO-DATE
:flashback-core-impl:compileJava UP-TO-DATE
:mitm:compileJava UP-TO-DATE
:mitm:processResources
:flashback-core-impl:processResources UP-TO-DATE
:mitm:processResources UP-TO-DATE
:flashback-core-impl:classes UP-TO-DATE
:mitm:classes UP-TO-DATE
:flashback-core-impl:jar
:mitm:jar UP-TO-DATE
:flashback-core-impl:jar UP-TO-DATE
:flashback-netty:compileJava UP-TO-DATE
:flashback-netty:classes UP-TO-DATE
:flashback-netty:jar UP-TO-DATE
:flashback-smartproxy:compileJava UP-TO-DATE
:flashback-smartproxy:classes UP-TO-DATE
:flashback-smartproxy:jar UP-TO-DATE
:flashback-admin:compileJava UP-TO-DATE
:flashback-admin:classes UP-TO-DATE
:flashback-admin:startAdminServer
Netty parseqThreadPoolSize: 9
SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.
Netty threadPoolSize: 256
log4j:WARN No appenders could be found for logger (io.netty.util.internal.logging.InternalLoggerFactory).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.
HttpServer running on port 1234. Press any key to stop server
> Building 95% > :flashback-admin:startAdminServer

[VireshS]

Never mind, I was able to make it work.