Error writing file a *.obj

[dummy via Digitalmars-d-learn]

Hi :)

   - OS: Winodws 10 Pro KN
   -  DMD: 2.073.2(ofcourse, i tried dmd of 2.074.x version. but 
same result)

When i build some application with dub, i got this error:
----------------------------------------------------------------------
> dub build
xx ~master: building configuration "application"...
Error: Error writing file 
'.dub\build\application-debug-windows-x86-dmd_2073-FEC52DAD217DFEA46ECF98CA4240FA06\xx.obj'
dmd failed with exit code 1
----------------------------------------------------------------------



What's mean? my dub.json here:
----------------------------------------------------------------------
{
	"name": "xx",
	"authors": [
		"dummy"
	],
	"description": "A minimal D application.",
	"copyright": "Copyright © 2017, dummy",
	"license": "proprietary",
	"dependencies": {
		"requests": "~>0.4.1"
	},
	"subConfigurations": {
		"requests": "vibed"
	}
}
----------------------------------------------------------------------
app.d is default file, so i didn't modify it.