File Download DNS error?

I am trying to download the files i have uploaded to the public storage folder and saved the path into the database. When i click to download the file it gives me this error.

This site can’t be reachedadditve.testapp’s DNS address could not be found. Diagnosing the problem.
DNS_PROBE_POSSIBLE


The files are being uploaded to the folder i expect them too

storage/app/public


filesystem.php``

 'public' => [
            'driver' => 'local',
            'root' => storage_path('app/public'),
            'url' => env('APP_URL').'app/public',
            'visibility' => 'public',
            'throw' => false,
        ],


And the file upload is as follows.

return $form
            ->schema([
                FileUpload::make('printUrl')
                ->preserveFilenames()
                ->downloadable()
                ->label('Print')
                ->required()
                ->visibility('public'),
            ]);


I don't have the best understanding of DNS so i am unsure what is blocking the download, especially because it says it is possible.
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