Created attachment 705408 [details]
Exeption in catalina.out logfile

Description of problem:
When I select 'Show the graph' for the 'Virtual Memory' or 'CPU Usage' monitoring probes, graph is not displaying and there is an Error 500 in browser console and java exeption in catalina.out logfile


Version-Release number of selected component (if applicable):
spacewalk 1.8

How reproducible:
I could reproduce this problem in Russian and German localisations. It is not reprodused in English and France localizations!

Error is not static - for example, it is not reproduce for 'Memory Usage' probe (graph displays successfully).

Steps to Reproduce:
1. Select the client system
2. Go to 'Monitoring' page
3. Select the 'CPU Usage' or 'Virtual memory' probe (You have to create this probe first)
4. Check the 'Show graph' checkbox and press the 'Generate report' button.
  
Actual results:
There is no visible effect - graph will not be displayed. But browser console has an Error 500 and there is an exeption in catalina.out logfile

Expected results:
Graph is displayed, without errors

Additional info:
output in catalina.out attached