error 500 java.lang.NullPointerException,at org.apache.jsp.demo1_jsp.getJoinURL(demo1_jsp.java:207)

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Khosro Bagheri

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Nov 2, 2015, 8:00:56 AM11/2/15
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Hi 
I have installed and config development environment of bbb. everything work well. I enter server ip in browser and create a demo meeting and work well. but after 2 or 3 times, I get this error 
Status Code500
Exception Typenull
Messagenull
Exception
java.lang.NullPointerException
	at org.apache.jsp.demo1_jsp.getJoinURL(demo1_jsp.java:207)
	at org.apache.jsp.demo1_jsp._jspService(demo1_jsp.java:1164)
	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:701)
 
I must restore a snapshot and create a meeting again. but after any change in bbb-client or sometimes without change I get this error.

Sincerely you Mahmood.

Fred Dixon

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Nov 2, 2015, 8:09:38 AM11/2/15
to BigBlueButton-dev
Hi Khosro ,

> I must restore a snapshot and create a meeting again. but after any change in bbb-client or sometimes without change I get this error.

How much memory do you have on your BigBlueButton server (the minimum is 4G)?  

When someone posts they are getting random errors, one possible cause is that BigBlueButton has insufficient memory to run and the various components will randomly fail due to out-of-memory.

Regards,... Fred

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Khosro Bagheri

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Nov 2, 2015, 8:22:30 AM11/2/15
to BigBlueButton-dev
Hi Fred
first at all thanks for your replay.
I have not enough memory in this machine so I must change it and test again.
I appreciate you 

Khosro Bagheri

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Nov 9, 2015, 2:38:19 AM11/9/15
to BigBlueButton-dev
Hi Fred

I move my VM to another machine with 5 GB ram. but I get error 500 same as first post. But when I revert to  packaged location for bbb-web,  I don't get error 500 but system hang in connveting server ......... in loading modules.
In moving VM I chagne  "bigbluebutton-web/grails-app/conf/bigbluebutton.properties" and  "bigbluebutton-client/src/conf/config.xml" with new Ip.

I appreciate you for your help.

Khosro Bagheri

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Nov 9, 2015, 3:38:54 AM11/9/15
to BigBlueButton-dev
Hi again
I think , this can help you to get problem,
when I enter  wget http://192.168.1.19/bigbluebutton/api/isMeetingRunning?meetingID=abcdef -O - in bbb server i get this error :
"Connecting to 192.168.1.19:80... connected.
HTTP request sent, awaiting response... 502 Bad Gateway
2015-11-09 08:36:10 ERROR 502: Bad Gateway.
"

Fred Dixon

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Nov 9, 2015, 8:21:51 AM11/9/15
to BigBlueButton-dev
Hi Khosro,

I would recommend making small changes (one at a time) and after each change test again.  If you make a bunch of changes, it's harder to pin-point which one is causing problems.

Since your API calls are failing, it's a good bet that the changes you are making to bbb-web are causing the issues.

Regards,... Fred


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Khosro Bagheri

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Nov 10, 2015, 3:28:29 AM11/10/15
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Hi Fred
Unfortunately sometimes without source change i am getting this error. But i have a problem in move Vm to another machine and change ip address. When i change ip address ì will got error 500. I have changed src/conf/conf.xml and bigbluebuttob.properties to new ip. Demo page is ok but after create new session i see error 500. And after change bbb-web to demo from source server hang in connecting to the server..... Do exist any article to move project from server to another.
I appreciate you

Fred Dixon

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Nov 10, 2015, 7:32:26 AM11/10/15
to BigBlueButton-dev
Hi Khosro,

> Unfortunately sometimes without source change i am getting this error.

Can you post the output of

   sudo bbb-conf --check

I would double-check that you've given the VM sufficient memory to run BigBlueButton.


When the IP address of the BigBlueButton server changes, you an update the configuration using bbb-conf. See


If you've setup a development environment and are running your own version of some components, you'll need to manually configure them.

Regards,... Fred

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