java.lang.NullPointerException intermittently

[mar...@vlxcorp.com]

Hello.  I have BBB 0.80 on Ubuntu 10.04.  When running the demo files (specifically creating or joining a meeting), I get this error:

An Error has occured:
Status Code 500
Exception Type null
Message null

java.lang.NullPointerException
    at org.apache.jsp.demo1_jsp.getJoinURL(demo1_jsp.java:200)
    at org.apache.jsp.demo1_jsp._jspService(demo1_jsp.java:944)
    at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:377)
    at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
    at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
    at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859)
    at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
    at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
    at java.lang.Thread.run(Thread.java:679)

The odd thing is, this only happens the first time.  If I reload the error page using F5, the meeting proceeds as normal, and runs as normal. 
If I exit the meeting and try again, the action proceeds with no error. 
If I wait 10 or 15 minutes (I'm not sure what the exact interval is) I get the 500 error again.
Any suggestions or assistance would be greatly appreciated!  Thanks!

[Gustavo Salazar]

Hi Marcelo,

https://code.google.com/p/bigbluebutton/wiki/FAQ#Using_the_API_examples_I_get_an_java.lang._NullPointerException

2013/9/30 <mar...@vlxcorp.com>

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[Marcelo M. Sartor]

Thanks for your response Gustavo,

I´d already read the link and configured BigBlueButtonURL String = "http:// <your_hostname> / BigBlueButton /"; and everything seems OK.
The odd thing is, this only happens at the first attempt. If I reload the page using F5, the meeting proceeds to normal and runs the usual.

Cheers,

Marcelo

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[Gustavo Salazar]

Try with

sudo bbb-conf --clean

2013/9/30 Marcelo M. Sartor <mar...@vlxcorp.com>

[Marcelo M. Sartor]

Hello Gustavo,
Sorry for the delay in responding, but last week I was working on another project.
As you suggested I issued the command sudo bbb-conf - clean
But the problem persists. If I press F5 works ...

Cheers,

Marcelo

[Marcelo M. Sartor]

Hello Gustavo,

I find the problem running sudo bbb-conf – debug

Thanks for your help!

Marcelo