dump in webdynpro : Table

I have the following dump even if the table is set with lead selection !!!!

Any idea ?

Error when processing your request 


What has happened? 
The URL http://rixsasd6.sbbio.be:8012/sap/bc/webdynpro/sap/zhrtm_job_description/ was not called due to an error. 
 
   
Note 

The following error text was processed in the system HRD : The lead selection has not been set. JOB_LIST  ꯃ䅢偲䅤 
The error occurred on the application server rixsasd6_HRD_12 and in the work process 0 . 
The termination type was: RABAX_STATE 
The ABAP call stack was: 
Method: _RAISE_ELEMENT_NOT_FOUND of program CL_WDR_CONTEXT_NODE===========CP
Method: PATH_TABLE_GET_ELEMENT2 of program CL_WDR_CONTEXT_NODE===========CP
Method: GET_BOUND_ELEMENT of program CL_WDR_VIEW_ELEMENT_ADAPTER===CP

 
   
  

What can I do? 
If the termination type was RABAX_STATE, then you can find more information on the cause of the termination in the system HRD in transaction ST22. 
If the termination type was ABORT_MESSAGE_STATE, then you can find more information on the cause of the termination on the application server rixsasd6_HRD_12 in transaction SM21. 
If the termination type was ERROR_MESSAGE_STATE, then you can search for more information in the trace file for the work process 0 in transaction ST11 on the application server rixsasd6_HRD_12 . In some situations, you may also need to analyze the trace files of other work processes. 
If you do not yet have a user ID, contact your system administrator. 


Error code: ICF-IE-http -c: 020 -u: STK73840 -l: E -s: HRD -i: rixsasd6_HRD_12 -w: 0 -d: 20070921 -t: 082340 -v: RABAX_STATE -e: UNCAUGHT_EXCEPTION 



HTTP 500 - Internal Server Error 


Your SAP Internet Communication Framework Team