Cannot share file due to error reading ACL

Instruction

• I use the master branch with latest commits to try building the Solid server.
• Firstly, I create a Solid server with Dockerfile.
• It looks fine and I also create a new Pod server named https://lee.electric-data-pod.local:8443. The related snapshots are as follows:

• I also create a private_folder folder and a test.txt successfully.

• When I try setting sharing file setting, I got the following snapshot:

It seems that I don't have the ACL file for this test.txt and I notice that the access control file will not be created when I create the test.txt file.

How to solve this problem? Creating a ACL file for test.txt manually?

Is there any way to create related ACL file for specific files automatically?

Thanks.