The tool package could not be restored. Tool 'project2015to2017.migrate2019.tool' failed to install. This failure may have been caused by:
* You are attempting to install a preview release and did not use the --version option to specify the version. * A package by this name was found, but it was not a .NET Core tool. * The required NuGet feed cannot be accessed, perhaps because of an Internet connection problem. * You mistyped the name of the tool.
The tool package could not be restored. Tool 'project2015to2017.migrate2019.tool' failed to install. This failure may have been caused by:
* You are attempting to install a preview release and did not use the --version option to specify the version. * A package by this name was found, but it was not a .NET Core tool. * The required NuGet feed cannot be accessed, perhaps because of an Internet connection problem. * You mistyped the name of the tool.