Hello Melissa,
there was a issue with Permissions, but this should have been fixed. If you connect to your VM either by `vagrant ssh` or by starting the VM itself you can log the permissions for each file by entering the command ls -al
Please make sure that you are in the following directory /home/vagrant
The attached screenshot shows my permissions. I can preview and download courses.
If everything works fine, Vagrant is easy to get up and running quickly. However, debugging in Vagrant is really hard because you will need to do this inside a virtual machine that only allows access via command line input.
I would recommend you the manual installation if you wan't to dive deeper into Adapt.
Thomas