Writing GCCPCA CA Pool Config Fails with Error 500

[GhostPratt]

Running Vault 1.9.2, with the 1.1.0 release of this plugin.

I've installed using the prebuilt binary following the direction provided in the README. Received Success registering and then enabling the plugin.

I am then attempting to run the following write to the configuration with of course my details filling in below.

vault write gcppca/config
pool="my-pool"
location="us-central1"
project="your-project-id"

During the run of this command I receive the following error: Error writing data to gcppca/config: Error making API request.

URL: PUT https://vault-address:port/v1/gcppca/config Code: 500. Errors:

• 1 error occurred: * internal error

Any assistnace on this would be much appreciated, thanks!