I'm very new to QGIS, but I can't seem to figure this one out no matter what I try.
The problem: I would like to switch between OS X and Windows working on a project. Every time I open it on OS X, however, I get the "handle unavailable layers"-dialog box.
I've tried exporting, saving in just about every way I know how, tried every solution SE and Google has given me, to no avail.
I'm sure there is an easy way of doing something as basic as this, but I have no idea how.
The project is a lot of polygons on top of a map. I've added a PDF showing a section of it in the Google Drive folder.
Google Drive folder with .qlm and .qgz file: https://drive.google.com/drive/folders/182xCmHLe0n3qmn-iopcDHwesS3OaiFpU?usp=sharing
Can anyone tell me what I'm doing wrong?