Failed to download the package from https%3A%2F%2Fgithub.com%2Fgdsfactory%2Fskywater130.git%2Fbranches%2Fmain%2Fsky130%2Fklayout.
There needs to be a file called 'grain.xml' below this URL. It needs to have the XML format of a KLayout package definition file.
This URL will be used for the package file: https%3A%2F%2Fgithub.com%2Fgdsfactory%2Fskywater130.git%2Fbranches%2Fmain%2Fsky130%2Fklayout/grain.xml.