Starting wso2 3.0.0 gateway windows "Could not load Logmanager"

Question

So i am trying to load the WSO2 gateway from my local machine running the new 3.0.0-m6 version downloaded from their website.

I have run everything as described in the quickstart guide, and i get the following error on start up.

Could not load Logmanager "org.ballerinalang.launcher.BLogManager"
java.lang.ClassNotFoundException: org.ballerinalang.launcher.BLogManager
    at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:335)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    at java.util.logging.LogManager$1.run(LogManager.java:195)
    at java.util.logging.LogManager$1.run(LogManager.java:181)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.util.logging.LogManager.<clinit>(LogManager.java:181)
    at java.util.logging.Logger.demandLogger(Logger.java:448)
    at java.util.logging.Logger.getLogger(Logger.java:502)
    at com.sun.jmx.remote.util.ClassLogger.<init>(ClassLogger.java:55)
    at sun.management.jmxremote.ConnectorBootstrap.<clinit>(ConnectorBootstrap.java:846)
    at sun.management.Agent.startLocalManagementAgent(Agent.java:138)
    at sun.management.Agent.startAgent(Agent.java:260)
    at sun.management.Agent.startAgent(Agent.java:447)
ballerina: unknown command 'start'
Run 'ballerina help' for usage.

• ActiveMQ is running
• WSO2 Server is running
• WSO2 Identity manager is running
• WSO2 API Manager is running
• I am starting the gateway from the root folder as explained in the start up guide.

Answer 1

Are you running this in Windows? The version 3.0.0-m6 is based on Ballerina v0.89 and in this version of Ballerina, there's a bug in the bin/ballerina.batfile. As you can see, it's looking for a class named org.ballerinalang.launcher.BLogManager and fails. This class was moved to another package and now, its fully qualified name is org.ballerinalang.logging.BLogManager. In the ballerina.bat script, change the property (towards the end of the file) -Djava.util.logging.manager="org.ballerinalang.launcher.BLogManager" to -Djava.util.logging.manager="org.ballerinalang.logging.BLogManager" and it should solve your problem.