dub commands do not run correctly.

[z]

On Saturday, 10 April 2021 at 13:15:19 UTC, Alain De Vos wrote:
> dub fetch lint
> Getting a release version failed: (1): Error: Got JSON of type 
> null_, expected object.
> Retry with ~master...
> (1): Error: Got JSON of type null_, expected object.

He meant `dub lint`, with the working directory in the package's 
root folder(where dub.sdl/dub.json is present)
It should then automatically fetch and compile dscanner and 
execute it on the package.