I ran the sample axis2Client in ESB and received a NPE.

[rajika@localhost axis2Client]$ ant stockquote -Daddurl=
http://localhost:8282/services/StockQuoteProxy -Dmode=placeorder
-Dsymbol=MSFT
Buildfile:
/home/rajika/projects/carbon/platform/products/esb/modules/distribution/target/wso2esb-4.5.0-SNAPSHOT/samples/axis2Client/build.xml

init:
    [mkdir] Created dir:
/home/rajika/projects/carbon/platform/products/esb/modules/distribution/target/wso2esb-4.5.0-SNAPSHOT/samples/axis2Client/target/classes
    [mkdir] Created dir:
/home/rajika/projects/carbon/platform/products/esb/modules/distribution/target/wso2esb-4.5.0-SNAPSHOT/work/temp/sampleClient
      [jar] Building MANIFEST-only jar:
/home/rajika/projects/carbon/platform/products/esb/modules/distribution/target/wso2esb-4.5.0-SNAPSHOT/samples/axis2Client/pathing.jar

compile:
    [javac] Compiling 23 source files to
/home/rajika/projects/carbon/platform/products/esb/modules/distribution/target/wso2esb-4.5.0-SNAPSHOT/samples/axis2Client/target/classes
    [javac] Note:
/home/rajika/projects/carbon/platform/products/esb/modules/distribution/target/wso2esb-4.5.0-SNAPSHOT/samples/axis2Client/src/samples/userguide/PWCallback.java
uses or overrides a deprecated API.
    [javac] Note: Recompile with -Xlint:deprecation for details.
    [javac] Note:
/home/rajika/projects/carbon/platform/products/esb/modules/distribution/target/wso2esb-4.5.0-SNAPSHOT/samples/axis2Client/src/samples/userguide/LoadbalanceFailoverClient.java
uses unchecked or unsafe operations.
    [javac] Note: Recompile with -Xlint:unchecked for details.

stockquote:
     [java] [2012-06-08 09:16:47,227]  INFO
{org.apache.axis2.deployment.DeploymentEngine} -  No services directory was
found under
/home/rajika/projects/carbon/platform/products/esb/modules/distribution/target/wso2esb-4.5.0-SNAPSHOT/samples/axis2Client/client_repo.
     [java] [2012-06-08 09:16:47,276]  INFO
{org.apache.axis2.deployment.ModuleDeployer} -  Deploying module:
addressing -
file:/home/rajika/projects/carbon/platform/products/esb/modules/distribution/target/wso2esb-4.5.0-SNAPSHOT/samples/axis2Client/client_repo/modules/addressing.mar
     [java] [2012-06-08 09:16:47,303]  INFO
{org.apache.axis2.deployment.ModuleDeployer} -  Deploying module: rampart -
file:/home/rajika/projects/carbon/platform/products/esb/modules/distribution/target/wso2esb-4.5.0-SNAPSHOT/samples/axis2Client/client_repo/modules/rampart.mar
     [java] [2012-06-08 09:16:47,404]  INFO
{org.apache.axis2.deployment.ModuleDeployer} -  Deploying module: sandesha2
-
file:/home/rajika/projects/carbon/platform/products/esb/modules/distribution/target/wso2esb-4.5.0-SNAPSHOT/samples/axis2Client/client_repo/modules/sandesha2.mar
     [java] [2012-06-08 09:16:47,429]  INFO
{org.apache.axis2.deployment.ModuleDeployer} -  Deploying module:
activation -
file:/home/rajika/projects/carbon/platform/products/esb/modules/distribution/target/wso2esb-4.5.0-SNAPSHOT/repository/components/plugins/org.wso2.carbon.activation_1.1.0.SNAPSHOT.jar
     [java] [2012-06-08 09:16:47,433]  INFO
{org.apache.axis2.deployment.ModuleDeployer} -  Deploying module:
addressing -
file:/home/rajika/projects/carbon/platform/products/esb/modules/distribution/target/wso2esb-4.5.0-SNAPSHOT/repository/components/plugins/org.wso2.carbon.addressing_4.0.0.SNAPSHOT.jar
     [java] [2012-06-08 09:16:47,452]  INFO
{org.apache.axis2.deployment.ModuleDeployer} -  Deploying module:
wso2caching -
file:/home/rajika/projects/carbon/platform/products/esb/modules/distribution/target/wso2esb-4.5.0-SNAPSHOT/repository/components/plugins/org.wso2.carbon.caching_4.0.0.SNAPSHOT.jar
     [java] [2012-06-08 09:16:47,458]  INFO
{org.apache.axis2.deployment.ModuleDeployer} -  Deploying module:
ComponentMgtModule -
file:/home/rajika/projects/carbon/platform/products/esb/modules/distribution/target/wso2esb-4.5.0-SNAPSHOT/repository/components/plugins/org.wso2.carbon.feature.mgt.services_4.0.0.SNAPSHOT.jar
     [java] [2012-06-08 09:16:47,465]  INFO
{org.apache.axis2.deployment.ModuleDeployer} -  Deploying module: wso2mex -
file:/home/rajika/projects/carbon/platform/products/esb/modules/distribution/target/wso2esb-4.5.0-SNAPSHOT/repository/components/plugins/org.wso2.carbon.mex_4.0.0.SNAPSHOT.jar
     [java] [2012-06-08 09:16:47,471]  INFO
{org.apache.axis2.deployment.ModuleDeployer} -  Deploying module: relay -
file:/home/rajika/projects/carbon/platform/products/esb/modules/distribution/target/wso2esb-4.5.0-SNAPSHOT/repository/components/plugins/org.wso2.carbon.relay.module_4.0.0.SNAPSHOT.jar
     [java] [2012-06-08 09:16:47,499]  INFO
{org.apache.axis2.deployment.ModuleDeployer} -  Deploying module: sandesha2
-
file:/home/rajika/projects/carbon/platform/products/esb/modules/distribution/target/wso2esb-4.5.0-SNAPSHOT/repository/components/plugins/org.wso2.carbon.rm_4.0.0.SNAPSHOT.jar
     [java] [2012-06-08 09:16:47,515]  INFO
{org.apache.axis2.deployment.ModuleDeployer} -  Deploying module:
POXSecurityModule -
file:/home/rajika/projects/carbon/platform/products/esb/modules/distribution/target/wso2esb-4.5.0-SNAPSHOT/repository/components/plugins/org.wso2.carbon.security.mgt_4.0.0.SNAPSHOT.jar
     [java] [2012-06-08 09:16:47,528]  INFO
{org.apache.axis2.deployment.ModuleDeployer} -  Deploying module:
ServerAdminModule -
file:/home/rajika/projects/carbon/platform/products/esb/modules/distribution/target/wso2esb-4.5.0-SNAPSHOT/repository/components/plugins/org.wso2.carbon.server.admin_4.0.0.SNAPSHOT.jar
     [java] [2012-06-08 09:16:47,538]  INFO
{org.apache.axis2.deployment.ModuleDeployer} -  Deploying module:
wso2statistics -
file:/home/rajika/projects/carbon/platform/products/esb/modules/distribution/target/wso2esb-4.5.0-SNAPSHOT/repository/components/plugins/org.wso2.carbon.statistics_4.0.0.SNAPSHOT.jar
     [java] [2012-06-08 09:16:47,555]  INFO
{org.apache.axis2.deployment.ModuleDeployer} -  Deploying module:
wso2throttle -
file:/home/rajika/projects/carbon/platform/products/esb/modules/distribution/target/wso2esb-4.5.0-SNAPSHOT/repository/components/plugins/org.wso2.carbon.throttle_4.0.0.SNAPSHOT.jar
     [java] [2012-06-08 09:16:47,562]  INFO
{org.apache.axis2.deployment.ModuleDeployer} -  Deploying module:
usagethrottling -
file:/home/rajika/projects/carbon/platform/products/esb/modules/distribution/target/wso2esb-4.5.0-SNAPSHOT/repository/components/plugins/org.wso2.carbon.throttling.agent_1.1.0.SNAPSHOT.jar
     [java] [2012-06-08 09:16:47,571]  INFO
{org.apache.axis2.deployment.ModuleDeployer} -  Deploying module:
wso2tracer -
file:/home/rajika/projects/carbon/platform/products/esb/modules/distribution/target/wso2esb-4.5.0-SNAPSHOT/repository/components/plugins/org.wso2.carbon.tracer_4.0.0.SNAPSHOT.jar
     [java] [2012-06-08 09:16:47,578]  INFO
{org.apache.axis2.deployment.ModuleDeployer} -  Deploying module: metering
-
file:/home/rajika/projects/carbon/platform/products/esb/modules/distribution/target/wso2esb-4.5.0-SNAPSHOT/repository/components/plugins/org.wso2.carbon.usage.agent_1.1.0.SNAPSHOT.jar
     [java] [2012-06-08 09:16:47,581]  INFO
{org.apache.axis2.deployment.ModuleDeployer} -  Deploying module: wso2xfer
-
file:/home/rajika/projects/carbon/platform/products/esb/modules/distribution/target/wso2esb-4.5.0-SNAPSHOT/repository/components/plugins/org.wso2.carbon.xfer_4.0.0.SNAPSHOT.jar
     [java] [2012-06-08 09:16:47,591]  INFO
{org.apache.axis2.deployment.ModuleDeployer} -  Deploying module: rampart -
file:/home/rajika/projects/carbon/platform/products/esb/modules/distribution/target/wso2esb-4.5.0-SNAPSHOT/repository/components/plugins/rampart-core_1.6.1.wso2v4.jar
     [java] [2012-06-08 09:16:47,603]  INFO
{org.apache.axis2.deployment.ModuleDeployer} -  Deploying module: rahas -
file:/home/rajika/projects/carbon/platform/products/esb/modules/distribution/target/wso2esb-4.5.0-SNAPSHOT/repository/components/plugins/rampart-trust_1.6.1.wso2v4.jar
     [java] java.lang.NullPointerException
     [java] at
org.wso2.carbon.statistics.persistance.StatisticsPersistenceUtils.getRegistryResource(StatisticsPersistenceUtils.java:284)
     [java] at
org.wso2.carbon.statistics.persistance.StatisticsPersistenceUtils.retrieveSystemStatistics(StatisticsPersistenceUtils.java:28)
     [java] at
org.wso2.carbon.statistics.module.StatisticsModule.init(StatisticsModule.java:43)
     [java] at
org.apache.axis2.context.ConfigurationContextFactory.initModules(ConfigurationContextFactory.java:252)
     [java] at
org.apache.axis2.context.ConfigurationContextFactory.init(ConfigurationContextFactory.java:230)
     [java] at
org.apache.axis2.context.ConfigurationContextFactory.createConfigurationContext(ConfigurationContextFactory.java:93)
     [java] at
org.apache.axis2.context.ConfigurationContextFactory.createConfigurationContextFromFileSystem(ConfigurationContextFactory.java:210)
     [java] at samples.userguide.StockQuoteClient.executeClient(Unknown
Source)
     [java] at samples.userguide.StockQuoteClient.main(Unknown Source)

BUILD SUCCESSFUL
Total time: 5 seconds
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