Route::get('/{ver}/d/{guid}',['uses'=>'Files@InputFileName']);
Route::get('1.0/d/{guid}', 'Files\v1b0\Files@inputFileName');
Route::get('2.0/d/{guid}', 'Files\v2b0\Files@inputFileName');
Route::get('2.1/d/{guid}', 'Files\v2b1\Files@inputFileName');
Route::get('/'.env('VERSION').'/d/{guid}',['uses'=>'Files@InputFileName']);