manager.HBCIUtils: org.kapott.hbci.exceptions.HBCI_Exception: *** error while signing

org.kapott.hbci.exceptions.HBCI_Exception: *** signing failed
<ERR> [2014.09.25 09:54:40.776] [main/atlassian-scheduler-quartz1.clustered_Worker-1] manager.HBCIUtils: org.kapott.hbci.exceptions.HBCI_Exception: *** error while signing
        at org.kapott.hbci.security.Sig.signIt(Sig.java:369)
        at org.kapott.hbci.manager.HBCIKernelImpl.rawDoIt(HBCIKernelImpl.java:257)
        at org.kapott.hbci.manager.HBCIKernelImpl.rawDoIt(HBCIKernelImpl.java:178)
        at org.kapott.hbci.manager.HBCIDialog.doDialogInit(HBCIDialog.java:149)
        at org.kapott.hbci.manager.HBCIDialog.doIt(HBCIDialog.java:402)
        at org.kapott.hbci.manager.HBCIHandler.execute(HBCIHandler.java:456)
        at org.kapott.hbci.manager.HBCIHandler$execute$0.call(Unknown Source)
        at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:45)
        at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:108)
        at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:112)
        at src.banking.volksbank.Transactions.main(getVolksbankEntries.groovy:324)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
        at java.lang.reflect.Method.invoke(Unknown Source)
        at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:90)
        at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:324)
        at org.codehaus.groovy.runtime.callsite.StaticMetaMethodSite.invoke(StaticMetaMethodSite.java:43)
        at org.codehaus.groovy.runtime.callsite.StaticMetaMethodSite.call(StaticMetaMethodSite.java:88)
        at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:45)
        at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:108)
        at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:112)
        at src.banking.volksbank.getVolksbankEntries.run(getVolksbankEntries.groovy:34)
        at groovy.util.GroovyScriptEngine.run(GroovyScriptEngine.java:577)
        at groovy.util.GroovyScriptEngine$run$1.call(Unknown Source)
        at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:45)
        at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:108)
        at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:120)
        at com.onresolve.scriptrunner.runner.ScriptRunnerImpl.runScript(ScriptRunnerImpl.groovy:392)
        at com.onresolve.scriptrunner.runner.ScriptRunner$runScript$2.callCurrent(Unknown Source)
        at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCallCurrent(CallSiteArray.java:49)
        at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:133)
        at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:145)
        at com.onresolve.scriptrunner.runner.ScriptRunnerImpl.runFileAsScript(ScriptRunnerImpl.groovy:183)
        at com.onresolve.scriptrunner.runner.ScriptRunnerImpl.runFileAsScript(ScriptRunnerImpl.groovy)
        at com.onresolve.scriptrunner.runner.ScriptRunner$runFileAsScript$0.call(Unknown Source)
        at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:45)
        at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:108)
        at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:116)
        at com.onresolve.jira.groovy.GroovyService.run(GroovyService.groovy:46)
        at com.atlassian.jira.service.JiraServiceContainerImpl.run(JiraServiceContainerImpl.java:66)
        at com.atlassian.jira.service.ServiceRunner.runService(ServiceRunner.java:75)
        at com.atlassian.jira.service.ServiceRunner.runServiceId(ServiceRunner.java:53)
        at com.atlassian.jira.service.ServiceRunner.runJob(ServiceRunner.java:36)
        at com.atlassian.scheduler.core.JobLauncher.runJob(JobLauncher.java:135)
        at com.atlassian.scheduler.core.JobLauncher.launchAndBuildResponse(JobLauncher.java:101)
        at com.atlassian.scheduler.core.JobLauncher.launch(JobLauncher.java:80)
        at com.atlassian.scheduler.quartz1.Quartz1Job.execute(Quartz1Job.java:32)
        at org.quartz.core.JobRunShell.run(JobRunShell.java:223)
        at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:549)
Caused by: org.kapott.hbci.exceptions.HBCI_Exception: *** signing failed
        at org.kapott.hbci.passport.HBCIPassportPinTan.sign(HBCIPassportPinTan.java:378)
        at org.kapott.hbci.security.Sig.signIt(Sig.java:337)
        ... 49 more
Caused by: java.lang.NullPointerException
        at java.lang.AbstractStringBuilder.replace(Unknown Source)
        at java.lang.StringBuffer.replace(Unknown Source)
        at java_lang_StringBuffer$replace.call(Unknown Source)
        at src.banking.volksbank.Transactions$MyHBCICallback.callback(getVolksbankEntries.groovy:75)
        at org.kapott.hbci.passport.HBCIPassportPinTan.sign(HBCIPassportPinTan.java:274)
        ... 50 more
Job-Error

Global Error
org.kapott.hbci.exceptions.HBCI_Exception: *** signing failed
<ERR> [2014.09.25 09:54:40.952] [main/atlassian-scheduler-quartz1.clustered_Worker-1] manager.HBCIUtils: org.kapott.hbci.exceptions.HBCI_Exception: *** error while signing
        at org.kapott.hbci.security.Sig.signIt(Sig.java:369)
        at org.kapott.hbci.manager.HBCIKernelImpl.rawDoIt(HBCIKernelImpl.java:257)
        at org.kapott.hbci.manager.HBCIKernelImpl.rawDoIt(HBCIKernelImpl.java:178)
        at org.kapott.hbci.manager.HBCIDialog.doDialogInit(HBCIDialog.java:149)
        at org.kapott.hbci.manager.HBCIDialog.doIt(HBCIDialog.java:402)
        at org.kapott.hbci.manager.HBCIHandler.execute(HBCIHandler.java:456)
        at org.kapott.hbci.manager.HBCIHandler$execute$0.call(Unknown Source)
        at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:45)
        at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:108)
        at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:112)
        at src.banking.volksbank.Transactions.main(getVolksbankEntries.groovy:413)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
        at java.lang.reflect.Method.invoke(Unknown Source)
        at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:90)
        at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:324)
        at org.codehaus.groovy.runtime.callsite.StaticMetaMethodSite.invoke(StaticMetaMethodSite.java:43)
        at org.codehaus.groovy.runtime.callsite.StaticMetaMethodSite.call(StaticMetaMethodSite.java:88)
        at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:45)
        at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:108)
        at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:112)
        at src.banking.volksbank.getVolksbankEntries.run(getVolksbankEntries.groovy:34)
        at groovy.util.GroovyScriptEngine.run(GroovyScriptEngine.java:577)
        at groovy.util.GroovyScriptEngine$run$1.call(Unknown Source)
        at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:45)
        at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:108)
        at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:120)
        at com.onresolve.scriptrunner.runner.ScriptRunnerImpl.runScript(ScriptRunnerImpl.groovy:392)
        at com.onresolve.scriptrunner.runner.ScriptRunner$runScript$2.callCurrent(Unknown Source)
        at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCallCurrent(CallSiteArray.java:49)
        at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:133)
        at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:145)
        at com.onresolve.scriptrunner.runner.ScriptRunnerImpl.runFileAsScript(ScriptRunnerImpl.groovy:183)
        at com.onresolve.scriptrunner.runner.ScriptRunnerImpl.runFileAsScript(ScriptRunnerImpl.groovy)
        at com.onresolve.scriptrunner.runner.ScriptRunner$runFileAsScript$0.call(Unknown Source)
        at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:45)
        at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:108)
        at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:116)
        at com.onresolve.jira.groovy.GroovyService.run(GroovyService.groovy:46)
        at com.atlassian.jira.service.JiraServiceContainerImpl.run(JiraServiceContainerImpl.java:66)
        at com.atlassian.jira.service.ServiceRunner.runService(ServiceRunner.java:75)
        at com.atlassian.jira.service.ServiceRunner.runServiceId(ServiceRunner.java:53)
        at com.atlassian.jira.service.ServiceRunner.runJob(ServiceRunner.java:36)
        at com.atlassian.scheduler.core.JobLauncher.runJob(JobLauncher.java:135)
        at com.atlassian.scheduler.core.JobLauncher.launchAndBuildResponse(JobLauncher.java:101)
        at com.atlassian.scheduler.core.JobLauncher.launch(JobLauncher.java:80)
        at com.atlassian.scheduler.quartz1.Quartz1Job.execute(Quartz1Job.java:32)
        at org.quartz.core.JobRunShell.run(JobRunShell.java:223)
        at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:549)
Caused by: org.kapott.hbci.exceptions.HBCI_Exception: *** signing failed
        at org.kapott.hbci.passport.HBCIPassportPinTan.sign(HBCIPassportPinTan.java:378)
        at org.kapott.hbci.security.Sig.signIt(Sig.java:337)
        ... 49 more
Caused by: java.lang.NullPointerException
        at java.lang.AbstractStringBuilder.replace(Unknown Source)
        at java.lang.StringBuffer.replace(Unknown Source)
        at java_lang_StringBuffer$replace.call(Unknown Source)
        at src.banking.volksbank.Transactions$MyHBCICallback.callback(getVolksbankEntries.groovy:75)
        at org.kapott.hbci.passport.HBCIPassportPinTan.sign(HBCIPassportPinTan.java:274)
        ... 50 more
Job-Error

Caused by: java.lang.NullPointerException
        at java.lang.AbstractStringBuilder.replace(Unknown Source)
        at java.lang.StringBuffer.replace(Unknown Source)
        at java_lang_StringBuffer$replace.call(Unknown Source)
        at src.banking.volksbank.Transactions$MyHBCICallback.callback(getVolksbankEntries.groovy:75)