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Posted to user@openmeetings.apache.org by Sam Hagen <ha...@gmail.com> on 2014/01/10 23:31:49 UTC

java.lang.NullPointerException error

Hi All,

I'm trying to do a fresh install of Openmeetings 2.1.1 on a newly 
configured Ubuntu 12.04 server.  I go through all the steps, outlined 
here 
<https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&ved=0CC4QFjAA&url=https%3A%2F%2Fcwiki.apache.org%2Fconfluence%2Fdownload%2Fattachments%2F27838216%2FQuick%2BInstallation%2BOpenMeetings%2B2.x%2Bon%2BUbuntu%2B12.10%2B-%2B12.04.pdf%3Fversion%3D1%26modificationDate%3D1361176041000&ei=4nLQUqX9Ecf-oQTEpoGYBA&usg=AFQjCNHiyGTdNBth172s2TG6aOvagVuk-g&sig2=BX_a-EvlAr-lYqDoiO8WxA&bvm=bv.59026428,d.cGU> 
(the guide has lead me to many successful installations before) but I am 
confronted with a null pointer exception error message the moment I 
enter http://my.ip.number:5080/openmeetings/install, which reads as follows:

    /HTTP Status 500 -/

    /type Exception report/

    /message/

    /description The server encountered an internal error that prevented
    it from fulfilling this request./

    /exception/

    /java.lang.NullPointerException/
    /org.apache.velocity.tools.view.VelocityView.performMerge(VelocityView.java:942)/
    /org.apache.velocity.tools.view.VelocityView.merge(VelocityView.java:902)/
    /org.apache.velocity.tools.view.VelocityViewServlet.mergeTemplate(VelocityViewServlet.java:318)/
    /org.apache.velocity.tools.view.VelocityViewServlet.doRequest(VelocityViewServlet.java:220)/
    /org.apache.velocity.tools.view.VelocityViewServlet.doGet(VelocityViewServlet.java:182)/
    /javax.servlet.http.HttpServlet.service(HttpServlet.java:621)/
    /javax.servlet.http.HttpServlet.service(HttpServlet.java:728)/
    /org.red5.logging.LoggerContextFilter.doFilter(LoggerContextFilter.java:77)/

    /note The full stack trace of the root cause is available in the
    Apache Tomcat/7.0.34 logs./
    /Apache Tomcat/7.0.34/

 From what I've read,  it seems that this error is about as helpful as 
saying "uhh my computer keeps crashing and I don't know why," but if 
anyone might be able to through me some guesses as to what it might 
mean, no matter how general, I would greatly appreciate it.  I gather 
that it means that it's trying to pass a null variable where there 
should be a value but that's about all I understand of it.

Thanks so much!

Sam

Re: java.lang.NullPointerException error

Posted by AB <an...@yahoo.com>.
I can't actually help and I'm sure someone that actually knows something will give you better info, but you did say: "if anyone might be able to through me some guesses as to what it might mean, no matter how general, I would greatly appreciate it. "

Seeing as how I can't help but notice this: "note The full stack trace of the root cause is available in the Apache Tomcat/7.0.34 logs.
Apache Tomcat/7.0.34"


I have to ask....  have you looked at what's in the log?

Just a suggestion.

________________________________
 From: Sam Hagen <ha...@gmail.com>
To: user@openmeetings.apache.org 
Sent: Friday, January 10, 2014 2:31 PM
Subject: java.lang.NullPointerException error
 


Hi All,

I'm trying to do a fresh install of Openmeetings 2.1.1 on a newly
    configured Ubuntu 12.04 server.  I go through all the steps, outlined here (the guide has lead me to many successful installations before) but I am confronted with a null pointer exception error message the moment I enter http://my.ip.number:5080/openmeetings/install, which reads as follows:


HTTP Status 500 -
>
>type Exception report
>
>message
>
>description The server encountered an internal error that prevented it from fulfilling this request.
>
>exception
>
>java.lang.NullPointerException
>   
org.apache.velocity.tools.view.VelocityView.performMerge(VelocityView.java:942)
>    org.apache.velocity.tools.view.VelocityView.merge(VelocityView.java:902)
>   
org.apache.velocity.tools.view.VelocityViewServlet.mergeTemplate(VelocityViewServlet.java:318)
>   
org.apache.velocity.tools.view.VelocityViewServlet.doRequest(VelocityViewServlet.java:220)
>   
org.apache.velocity.tools.view.VelocityViewServlet.doGet(VelocityViewServlet.java:182)
>    javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
>    javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
>   
org.red5.logging.LoggerContextFilter.doFilter(LoggerContextFilter.java:77)
>
>note The full stack trace of the root cause is available in the Apache Tomcat/7.0.34 logs.
>Apache Tomcat/7.0.34
>
>
From what I've read,  it seems that this error is about as helpful as saying "uhh my computer keeps crashing and I don't know why," but if anyone might be able to through me some guesses as to what it might mean, no matter how general, I would greatly appreciate it.  I gather that it means that it's trying to pass a null variable where there should be a value but that's about all I understand of it.

Thanks so much!

Sam

Re: java.lang.NullPointerException error

Posted by Maxim Solodovnik <so...@gmail.com>.
Please check logs to get the cause of this error
On Jan 11, 2014 5:32 AM, "Sam Hagen" <ha...@gmail.com> wrote:

>  Hi All,
>
> I'm trying to do a fresh install of Openmeetings 2.1.1 on a newly
> configured Ubuntu 12.04 server.  I go through all the steps, outlined here<https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&ved=0CC4QFjAA&url=https%3A%2F%2Fcwiki.apache.org%2Fconfluence%2Fdownload%2Fattachments%2F27838216%2FQuick%2BInstallation%2BOpenMeetings%2B2.x%2Bon%2BUbuntu%2B12.10%2B-%2B12.04.pdf%3Fversion%3D1%26modificationDate%3D1361176041000&ei=4nLQUqX9Ecf-oQTEpoGYBA&usg=AFQjCNHiyGTdNBth172s2TG6aOvagVuk-g&sig2=BX_a-EvlAr-lYqDoiO8WxA&bvm=bv.59026428,d.cGU>(the guide has lead me to many successful installations before) but I am
> confronted with a null pointer exception error message the moment I enter
> http://my.ip.number:5080/openmeetings/install, which reads as follows:
>
> *HTTP Status 500 -*
>
> *type Exception report*
>
> *message*
>
> *description The server encountered an internal error that prevented it
> from fulfilling this request.*
>
> *exception*
>
> *java.lang.NullPointerException*
> *
> org.apache.velocity.tools.view.VelocityView.performMerge(VelocityView.java:942)*
> *
> org.apache.velocity.tools.view.VelocityView.merge(VelocityView.java:902)*
> *
> org.apache.velocity.tools.view.VelocityViewServlet.mergeTemplate(VelocityViewServlet.java:318)*
> *
> org.apache.velocity.tools.view.VelocityViewServlet.doRequest(VelocityViewServlet.java:220)*
> *
> org.apache.velocity.tools.view.VelocityViewServlet.doGet(VelocityViewServlet.java:182)*
> *    javax.servlet.http.HttpServlet.service(HttpServlet.java:621)*
> *    javax.servlet.http.HttpServlet.service(HttpServlet.java:728)*
> *
> org.red5.logging.LoggerContextFilter.doFilter(LoggerContextFilter.java:77)*
>
> *note The full stack trace of the root cause is available in the Apache
> Tomcat/7.0.34 logs.*
> *Apache Tomcat/7.0.34*
>
>  From what I've read,  it seems that this error is about as helpful as
> saying "uhh my computer keeps crashing and I don't know why," but if anyone
> might be able to through me some guesses as to what it might mean, no
> matter how general, I would greatly appreciate it.  I gather that it means
> that it's trying to pass a null variable where there should be a value but
> that's about all I understand of it.
>
> Thanks so much!
>
> Sam
>