No source available for "0x8FBD75( ekern.exe )()解决思路

No source available for "0x8FBD75( ekern.exe )()
出现错误no source available for 0x8FBD75（ekern.exe),好像是因为空指针的问题，小弟初学，看不出来问题，求指点
{
TBuf<50> name(_L(""));
CAknTextQueryDialog* dialog=CAknTextQueryDialog::NewL(name);
if (dialog->ExecuteLD(R_FIGHT_CONTAINER_DATA_QUERY1))
        {
        CPbkContactEngine * iPbkContactEngine = CPbkContactEngine::NewL();
    CContactIdArray* pArrayOfID = iPbkContactEngine->FindLC(name);
    CleanupStack::PushL(pArrayOfID);
    CleanupStack::PushL(iPbkContactEngine);
    TInt nCount = pArrayOfID->Count();
    TInt i = 0;
       for (i = 0; i < nCount; i++)
               {
                   
                    CPbkContactItem* pContactItem = iPbkContactEngine->ReadContactLC(
                            (*pArrayOfID)[i]);

                 
                    if (pContactItem == NULL)
                        {
                        continue;
                        }

                    TPbkContactItemField* pCntField;
                    CleanupStack::PushL(pCntField);
                      
                    pCntField = pContactItem->FindField(EPbkFieldIdLastName);
                    TBuf<50> pFirstName;
                    if (pCntField)
                        {
                        pCntField->GetTextL(pFirstName);
                        }
                    else
                        {