Unresolved Dependencies Grails 2.3 - maven

Question

I am unable to run my Grails app because of a dependency problem. BuildConfig.groovy is set to use Maven Central which has the dependencies that Grails cannot find. Any idea why?
This is a project which I only just upgraded to Grails 2.3, if that matters.
Loading Grails 2.3.0
Dependency resolver grailsPlugins already defined. Ignoring...
Dependency resolver grailsHome already defined. Ignoring...
| Configuring classpath
:: problems summary ::
:::: WARNINGS
::::::::::::::::::::::::::::::::::::::::::::::
:: UNRESOLVED DEPENDENCIES ::
::::::::::::::::::::::::::::::::::::::::::::::
:: log4j#log4j;1.2.17: configuration not found in log4j#log4j;1.2.17: 'master'. It was required from org.grails.internal#manage;1301 runtime
:: org.jboss.netty#netty;3.2.5.Final: configuration not found in org.jboss.netty#netty;3.2.5.Final: 'compile'. It was required from com.mycompany.event#commons;35.9 compile
:: org.springframework#spring-test;3.2.4.RELEASE: configuration not found in org.springframework#spring-test;3.2.4.RELEASE: 'compile'. It was required from org.grails#grails-plugin-testing;2.3.0 compile
::::::::::::::::::::::::::::::::::::::::::::::
| Error Resolve error obtaining dependencies: Failed to resolve dependencies (Set log level to 'warn' in BuildConfig.groovy for more information):
- log4j:log4j:1.2.17
- org.jboss.netty:netty:3.2.5.Final
- org.springframework:spring-test:3.2.4.RELEASE
(Use --stacktrace to see the full trace)
:: problems summary ::
:::: WARNINGS
::::::::::::::::::::::::::::::::::::::::::::::
:: UNRESOLVED DEPENDENCIES ::
::::::::::::::::::::::::::::::::::::::::::::::
:: log4j#log4j;1.2.17: configuration not found in log4j#log4j;1.2.17: 'master'. It was required from org.grails.internal#manage;1301 runtime
:: org.jboss.netty#netty;3.2.5.Final: configuration not found in org.jboss.netty#netty;3.2.5.Final: 'compile'. It was required from com.mycompany.event#commons;35.9 compile
::::::::::::::::::::::::::::::::::::::::::::::
| Error Resolve error obtaining dependencies: Failed to resolve dependencies (Set log level to 'warn' in BuildConfig.groovy for more information):
- log4j:log4j:1.2.17
- org.jboss.netty:netty:3.2.5.Final
(Use --stacktrace to see the full trace)
| Error Failed to resolve dependencies (Set log level to 'warn' in BuildConfig.groovy for more information):
- log4j:log4j:1.2.17
- org.jboss.netty:netty:3.2.5.Final
| Run 'grails dependency-report' for further information.
How do I get Grails to find these dependencies?
Thanks!

Answer 1

Most probably you are facing this issue because of old version of spring-test transitive dependency by plugins or any other dependency.
You need to exclude spring-test as mentioned here in the upgrade guide
As suggested by the app, running a dependency-report will be the best bet to find out conflicts and missing dependencies.