Getting Parameter set cannot be resolved message when trying to execute New-MgTeamChannelMember

[kemppaik1]

I have a script that is creating a MS Team and a Shared Channel. When I go to add a new member to the Shared Channel using New-MgTeamChannelMember, I'm continually getting this error:

"New-MgTeamChannelMember: Parameter set cannot be resolved using the specified named parameters. One or more parameters issued cannot be used together or an insufficient number of parameters were provided."

Below is the code I am executing (commented out code is a variation I have been trying with the same result). Can anyone provide any suggestions on how I can get around this/what I'm doing incorrectly in my code? $userID parameter I've tried the users ID and UPN, same results.

Thanks in advance!