Error in Jasper Report while create a report from openerp...

[sbhavsar1991]

Traceback :

 

2014-04-10 04:53:21,107 4127 ERROR ? openerp.service.web_services: Exception: ('Report Error', 'Failed to invoke method execute in class com.nantic.jasperreports.JasperServer: net/sf/jasperreports/compilers/GroovyEvaluator')
Traceback (most recent call last):
  File "/home/erp/stable-7.0/server/openerp/service/web_services.py", line 702, in go
    (result, format) = obj.create(cr, uid, ids, datas, context)
  File "/home/erp/stable-7.0/addons/jasper_reports/jasper_report.py", line 258, in create
    return ( r.execute(), 'pdf' )
  File "/home/erp/stable-7.0/addons/jasper_reports/jasper_report.py", line 150, in execute
    pages = self.executeReport( dataFile, outputFile, subreportDataFiles )
  File "/home/erp/stable-7.0/addons/jasper_reports/jasper_report.py", line 224, in executeReport
    return server.execute( connectionParameters, self.reportPath, outputFile, parameters )
  File "/home/erp/stable-7.0/addons/jasper_reports/JasperReports/JasperServer.py", line 98, in execute
    raise osv.except_osv(_('Report Error'), e.faultString)
except_osv: ('Report Error', 'Failed to invoke method execute in class com.nantic.jasperreports.JasperServer: net/sf/jasperreports/compilers/GroovyEvaluator')



OpenErp Calling====== report report_get ('jasper_db_7', 1, 'admin', 1)
2014-04-10 04:53:21,208 4127 ERROR None openerp.netsvc: Report Error
Failed to invoke method execute in class com.nantic.jasperreports.JasperServer: net/sf/jasperreports/compilers/GroovyEvaluator
Traceback (most recent call last):
  File "/home/erp/stable-7.0/server/openerp/netsvc.py", line 298, in dispatch_rpc
    result = ExportService.getService(service_name).dispatch(method, params)
  File "/home/erp/stable-7.0/server/openerp/service/web_services.py", line 642, in dispatch
    res = fn(db, uid, *params)
  File "/home/erp/stable-7.0/server/openerp/service/web_services.py", line 750, in exp_report_get
    return self._check_report(report_id)
  File "/home/erp/stable-7.0/server/openerp/service/web_services.py", line 728, in _check_report
    netsvc.abort_response(exc, exc.message, 'warning', exc.traceback)
  File "/home/erp/stable-7.0/server/openerp/netsvc.py", line 72, in abort_response
    raise openerp.osv.osv.except_osv(description, details)
except_osv: (u'Report Error', u'Failed to invoke method execute in class com.nantic.jasperreports.JasperServer: net/sf/jasperreports/compilers/GroovyEvaluator')