TradeDocumentReportContract object not initialized

Hi all

how to resolve this? I am getting when I try to open a report

TradeDocumentReportContract object not initialized.

Stack trace

(C)\Classes\TradeDocumentReportController\preRunModifyContract - line 11

(C)\Classes\SrsPrintMgmtController\outputReports - line 60

(C)\Classes\SalesQuotationController\runPrintMgmt - line 22

(C)\Classes\SrsPrintMgmtController\run - line 14

(C)\Classes\SysOperationController\startOperation - line 8

(C)\Classes\SrsReportRunController\startOperation - line 9

(C)\Classes\SrsPrintMgmtController\startOperation - line 14

(C)\Classes\SrsPrintMgmtFormLetterController\startOperation - line 14

(C)\Classes\SalesQuotationController\main - line 13

(C)\Classes\FormFunctionButtonControl\Clicked