Unable to find package . No packages exist with this id in source. .NET core

I am trying to use a project as nuget package in other solution. The project i want to use has 2 references to other projects in the solution he is at.I am creating the .nupkg file using the cli command dotnet pack in the path of the project i want to use as a nuget package.When adding the .nupkg file to the other solution using the command dotnet add package i get the error in the post title with the name of the 2 references projects.