New-MgGroupMember cmdlet broken in 2.26.0

[lucien1264]

Describe the bug

Using PowerShell 7.5 and Graph modules version 2.26.0
The New-MgGroupMember cmdlet returns a " New-MgGroupMember_CreateExpanded: Invalid URL format specified in payload " error.
Is the cmdlet no longer supported?

$upn = '[email protected]'
$user = Get-MgUser -UserId $upn | Select-Object Id

tried with and without quotes:

New-MgGroupMember -GroupId '2d4f9439-1680-425e-a185-1403687ff2fc' -DirectoryObjectId $user.Id
New-MgGroupMember_CreateExpanded: Invalid URL format specified in payload.

New-MgGroupMember -GroupId "2d4f9439-1680-425e-a185-1403687ff2fc" -DirectoryObjectId $user.Id
New-MgGroupMember_CreateExpanded: Invalid URL format specified in payload.

New-MgGroupMember -GroupId 2d4f9439-1680-425e-a185-1403687ff2fc -DirectoryObjectId $user.Id
New-MgGroupMember_CreateExpanded: Invalid URL format specified in payload.

Expected behavior

No Error, and user added to the Security group.

How to reproduce

Connect-Graph -Scopes "User.Read.All","Group.ReadWrite.All"

$upn = '[email protected]'
$user = Get-MgUser -UserId $upn | Select-Object Id

New-MgGroupMember -GroupId '2d4f9439-1680-425e-a185-1403687ff2fc' -DirectoryObjectId $user.Id

SDK Version

2.26.0

Latest version known to work for scenario above?

2.25.0

Known Workarounds

re-write scripts to use New-MgGroupMemberByRef which would mean a nice additional workload.

Debug output

Click to expand log

```

New-MgGroupMember -GroupId "2d4f9439-1680-425e-a185-1403687ff2fc" -DirectoryObjectId $user.Id -Debug
DEBUG: CmdletBeginProcessing:
DEBUG: CmdletProcessRecordStart:

Confirm
Are you sure you want to perform this action?
Performing the operation "New-MgGroupMember_CreateExpanded" on target "Call remote
'CreateGroupMember' operation".
[Y] Yes [A] Yes to All [N] No [L] No to All [S] Suspend [?] Help (default is "Y"): Y
DEBUG: CmdletProcessRecordAsyncStart:
DEBUG: CmdletGetPipeline:
DEBUG: CmdletBeforeAPICall:
DEBUG: URLCreated: /groups/2d4f9439-1680-425e-a185-1403687ff2fc/members/$ref
DEBUG: RequestCreated: /v1.0/groups/2d4f9439-1680-425e-a185-1403687ff2fc/members/$ref
DEBUG: HeaderParametersAdded:
DEBUG: BodyContentSet:
DEBUG: BeforeCall:
DEBUG: ResponseCreated:
DEBUG: BeforeResponseDispatch:
New-MgGroupMember_CreateExpanded: Invalid URL format specified in payload.
DEBUG: Finally:
DEBUG: CmdletAfterAPICall:
DEBUG: CmdletProcessRecordAsyncEnd:
DEBUG: CmdletProcessRecordEnd:
DEBUG: CmdletEndProcessing:

</details>


### Configuration

Name                           Value
----                           -----
PSVersion                      7.5.0
PSEdition                      Core
GitCommitId                    7.5.0
OS                             Microsoft Windows 10.0.26100
Platform                       Win32NT
PSCompatibleVersions           {1.0, 2.0, 3.0, 4.0…}
PSRemotingProtocolVersion      2.3
SerializationVersion           1.1.0.1
WSManStackVersion              3.0

### Other information

_No response_

[timayabi2020]

Hi @lucien1264 apologies for this experience. The issue was already reported here #3154. I'll therefore close this and advise that we track the issue from there