The following commands are already available on this system:'Test-AccessToken'. This module 'MSGraphRequest' may override the existing commands. If you still want to install this module 'MSGraphRequest', use -AllowClobber parameter.
-AllowClobber
Overrides warning messages about installation conflicts about existing commands on a computer. Overwrites existing commands that have the same name as commands being installed by a module. AllowClobber and Force can be used together in an Install-Module command.
The proxy cmdlet transform the value of this parameter to the NoClobber parameter of the Install-PSResource cmdlet.
The following commands are already available on this system:'Test-AccessToken'. This module 'MSGraphRequest' may override the existing commands. If you still want to install this module 'MSGraphRequest', use -AllowClobber parameter.
Extract from https://learn.microsoft.com/en-us/powershell/module/powershellget/install-module?view=powershellget-3.x#-allowclobber
-AllowClobber Overrides warning messages about installation conflicts about existing commands on a computer. Overwrites existing commands that have the same name as commands being installed by a module. AllowClobber and Force can be used together in an Install-Module command.
The proxy cmdlet transform the value of this parameter to the NoClobber parameter of the Install-PSResource cmdlet.