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I am getting an error in my application on 500 Internal Server Error. The firebug gives me,

NetworkError: 500 Internal Server Error - http://webgis.arizona.edu/ArcGIS/rest/services/webGIS/Shock_Models/GPServer/Income_Log/jobs/jc09c501156564f71abc5d98393581267/results/final_shp?dpi=96&transparent=true&format=png8&imageSR=102100&f=image&bbox=%7B%22xmin%22%3A-14519891.438356264%2C%22ymin%22%3A637618.0139790997%2C%22xmax%22%3A-6692739.741956295%2C%22ymax%22%3A6507981.786279075%2C%22spatialReference%22%3A%7B%22wkid%22%3A102100%7D%7D&bboxSR=102100&size=800%2C600

And when I goto that particular link, I get this error,

Server Error - Object reference not set to an instance of an object.

Any idea how I can correct it?

UPDATE

I was told to use fiddler and see the error details that is occurring over the network and this is the output that I got,

SESSION STATE: Done. Response Entity Size: 849 bytes.

== FLAGS ================== BitFlags: [ClientPipeReused, ServerPipeReused] 0x18 X-CLIENTPORT: 2010 X-RESPONSEBODYTRANSFERLENGTH: 849 X-EGRESSPORT: 2023 X-HOSTIP: 128.196.53.161 X-PROCESSINFO: firefox:2248 X-CLIENTIP: 127.0.0.1 X-SERVERSOCKET: REUSE ServerPipe#2

== TIMING INFO ============ ClientConnected: 15:53:51.383 ClientBeginRequest: 15:53:51.494 GotRequestHeaders: 15:53:51.494 ClientDoneRequest: 15:53:51.494 Determine Gateway: 0ms DNS Lookup: 0ms TCP/IP Connect: 0ms HTTPS Handshake: 0ms ServerConnected: 15:52:45.077 FiddlerBeginRequest: 15:53:51.495 ServerGotRequest: 15:53:51.495 ServerBeginResponse: 15:53:51.679 GotResponseHeaders: 15:53:51.679 ServerDoneResponse: 15:53:51.679 ClientBeginResponse: 15:53:51.679 ClientDoneResponse: 15:53:51.679

Overall Elapsed: 00:00:00.1850106

The response was buffered before delivery to the client.

== WININET CACHE INFO ============ This URL is not present in the WinINET cache. [Code: 2] * Note: Data above shows WinINET's current cache state, not the state at the time of the request. * Note: Data above shows WinINET's Medium Integrity (non-Protected Mode) cache only.

But I am still confused as to what the error is? This is the application. I am not sure if the error is due to the ArcGIS-Server or the Windows Server 2008. I am new on working with the Windows Server and wanted to know where can I look for the error lof files?

This is the link which gives the details and the log info of the job executed. This is the output.

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To me it looks like a programming error with the service itself, not the servers it's running on (well maybe configuration of the web server). Did that specific link EVER work? – techie007 Nov 11 '12 at 21:26
If you navigate to "webgis.arizona.edu/ArcGIS/rest/services/webGIS/Shock_Models/…; without any parameters it reports the referenced Job doesn't exist in a more friendly manner: "Unable to get value of param 'final_shp' for Job ID 'j10905b1a50f141e0b62f1ab8ef230f51'. The job may not exist or it could still be executing or could have failed.". Are you sure that specific job exists in the DB, and do other jobs work as expected? – techie007 Nov 11 '12 at 21:30
thanks for the response @techie007, the problem is that the jobs are removed everyday. So if you click on the application link and click on the map, it takes around 20-25 sec for the process, you will see in the console "Success", which tell you that the process is done and then it will give you the error for the job id that you created. This job id is lost after a day. Let me update the job id, just a sec. – Sam007 Nov 11 '12 at 21:44
@techie007 thanks for waiting. I just added the links to the log and the output for the latest job in the question. Let me know if you need any more info – Sam007 Nov 11 '12 at 22:00
Is it AJAX? Sometimes that causes weird errors on localhost.. – Grizly Nov 11 '12 at 23:06
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closed as not a real question by MDMarra, Scott Pack, Adrian, Ward, Brent Pabst Nov 12 '12 at 16:36

It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, see the FAQ.