Unable to install the extension

[brickpop]

Hi there,

I'm currently using VSCodium and the extension seems to be unavailable on the extensions browser.
Even tried via the CLI, same result:

$ code --install-extension aprilandjan.ascii-tree-generator
Installing extensions...
Extension 'aprilandjan.ascii-tree-generator' not found.
Make sure you use the full extension ID, including the publisher, e.g.: ms-dotnettools.csharp
Failed Installing Extensions: aprilandjan.ascii-tree-generator