Empire Version

• Empire-sponsor 4.1.0

Starkiller Version
starkiller-1.8.0.AppImage, and issue is also in starkiller-1.9.0-Sponsors.AppImage

OS Information (Linux flavor, Python version)

• OS: Kali Linux 2021.2
• Python: The version that's included in the Docker image.

Describe the bug

The "File Browser" never displays files, and I see an error in the console.

To Reproduce

Steps to reproduce the behavior:

1. Interact with an agent.

2. click on File Browser

3. Notice that circling dots never complete and never shows files.

4. See error in the console or Tasks: "[!] error running command: The term 'ConvertTo-Json' is not recognized as the name of a cmdlet, function, script file, or operable program. Check the spelling of the name, or if a path was included, verify that the path is correct and try again."

Expected behavior

I should see a list of files and directories.

Screenshots

If applicable, add screenshots to help explain your problem.

Desktop (please complete the following information):

• OS: Kali 2021.2 virtual machine (VirtualBox)

• Version 2021.2

Additional context

Empire server is running in a Docker container built from Empire-Sponsors "sponsors-master" branch.

git clone https://github.com/BC-SECURITY/Empire-Sponsors.git && cd Empire-Sponsors
sudo docker build -t empire-sponsor:4.1.0 .
sudo docker create -v /empire --name data empire-sponsor:4.1.0
sudo docker run -it --privileged --net=host --volumes-from data empire-sponsor:4.1.0

I'm able to create a listener and stager, and after running the stager on the Windows target system, I get an agent check-in. I can interact with the agent and run commands. When I click on File Browser, the dots circling never stop and I see the "ConvertTo-Json" error I included above.