Unable to use theme with antigen

[João Vitor]

Describe the bug
When trying to install the theme with antigen I get the following error

To Reproduce
Steps to reproduce the behavior:

1. Install antigen
2. Go to '.zsrc' file
3. Add the following antigen theme reobin/typewritten
4. It doesn't work with antigen bundle reobin/typewritten either
5. Open a new Terminal tab/window
6. See error

Screenshots

Desktop (please complete the following information):

• OS: macOS Intel based
• Terminal app

[João Vitor]

Apparently, antigen doesn't load plugins without a master branch.
So installing it like antigen theme reobin/typewritten@main worked