Microsoft Dynamics NAV Server attempted to issue a client callback to download a file: XML

Hello every one,

my requirement is to generate XML file on Server (with shared path), and i am trying to achive the same using report, when i run the same using RTC file is getting generate. NAV version (2017)
but when i run the same from Job Queue it throws back with error below
"Microsoft Dynamics NAV Server attempted to issue a client callback to download a file: XML"
and below is the peace of code that i am trying to generate XML file.

any help to resolve would be much appreciated. thanks in advance.

FullFileName := FileName;
ServerFiletxttemplateName := FileMgt.ServerTempFileName('xml');
FileVar.CREATE(ServerFiletxttemplateName);
FileVar.CREATEINSTREAM(InStr);
xmlDoc.Save(InStr);
FILE.DOWNLOADFROMSTREAM(InStr,'','<TEMP>', '',Magicpath);
UPLOADINTOSTREAM('','<TEMP>','',Magicpath,InStr);
FileVar.CLOSE;
FileMgt.CopyClientFile(Magicpath,FileName,TRUE);