MSSQL PlugIn: The term Get-IcingaServiceCheckName is not recognized

Hello everyone,

I recently, about 1.5 weeks ago, installed Icinga for Windows on a test MSSQL server to try out the capabilities of the official plugin:

So far I have icinga-powershell-plugins, icinga-powershell-framework and icinga-powershell-mssql on the machine. I also integrated the commands in my Director.

I tried out some example inputs from the documentation, e.g. Invoke-IcingaCheckCPU, with success but when I try the same with any of MSSQL-Checks I get the following message, both locally and in Director:

Has anyone encountered the same error and could help me out here?