Error When Running npx @lwc-garden/core dev

[jmcnaughton-isuf]

When running the above command I get an error saying:

[error] LWC1127: Invalid directive "lwc:is" on element lwc:component.

[CompilerError: LWC1127: Invalid directive "lwc:is" on element lwc:component.] {
level: 1,
code: 1127,
filename: '\.garden\components\app\app.html',
location: [Object]
}

I have the most recent version of the CLI plugin so Im not sure what is wrong with my configuration.