BigQuery plugin problem with signature after installation

Hi,
I installed this Google BigQuery plugin Google BigQuery plugin for Grafana | Grafana Labs, manually by downloading the linux-amd64 version of the plugin.
After installation though I was not able to see the plugin in show up and I see this in the log.
logger=plugin.loader t=2022-11-08T22:19:46.75+0000 lvl=warn msg="The following files were not included in the signature" plugin=grafana-bigquery-datasource files="unsupported value type" logger=plugin.loader t=2022-11-08T22:19:46.75+0000 lvl=warn msg="Skipping loading plugin due to problem with signature" pluginID=vonage-status-panel status=unsigned logger=plugin.loader t=2022-11-08T22:19:46.75+0000 lvl=warn msg="Skipping loading plugin due to problem with signature" pluginID=grafana-bigquery-datasource status=modified

I was wondering if anyone know why this plugin from Grafana Lab would seem to have a signature that’s not matching. Thanks!