Powershell create access policy Azure - powershell

Question

I'm trying to create an access policy so that I can create meetings using Microsoft Graph API on the user's behalf. To do this I need to do a script that is similar to this:
Connect-MicrosoftTeams
New-CsApplicationAccessPolicy -Identity Random -AppIds "applicationid" -Description "Users"
Grant-CsApplicationAccessPolicy -PolicyName Random -Identity "userId"
But when I try to run the second line I get this error:
At C:\Program Files\WindowsPowerShell\Modules\MicrosoftTeams\2.3.1\net472\SfBORemotePowershellModule.psm1:63 char:22
+ $remoteSession = & (Get-CsOnlineSessionCommand)
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : NotSpecified: (:) [Get-CsOnlineSession], UnauthorizedAccessException
+ FullyQualifiedErrorId : UnauthorizedAccessException,Microsoft.Teams.ConfigApi.Cmdlets.GetCsOnlineSession
Invoke-Command : Cannot validate argument on parameter 'Session'. The argument is null or empty. Provide an argument that is
not null or empty, and then try the command again.
At C:\Program Files\WindowsPowerShell\Modules\MicrosoftTeams\2.3.1\net472\SfBORemotePowershellModule.psm1:22959 char:38
+ ... -Session (Get-PSImplicitRemotingSession -CommandName 'New-CsApplic ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : InvalidData: (:) [Invoke-Command], ParentContainsErrorRecordException
+ FullyQualifiedErrorId : ParameterArgumentValidationError,Microsoft.PowerShell.Commands.InvokeCommandCommand
I'm guessing it has something to do with the first command that it's not remembering my login, but I can't find anywhere on how to do this. Does anyone know what I'm doing wrong and what the correct way is?.
Edit:
I finished the first problem. I needed to create an account on the active directory itself because Microsoft accounts weren't allowed. But my second error is still here:
Invoke-Command : Cannot validate argument on parameter 'Session'. The argument is null or empty. Provide an argument that is
not null or empty, and then try the command again.
At C:\Program Files\WindowsPowerShell\Modules\MicrosoftTeams\2.3.1\net472\SfBORemotePowershellModule.psm1:22959 char:38
+ ... -Session (Get-PSImplicitRemotingSession -CommandName 'New-CsApplic ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : InvalidData: (:) [Invoke-Command], ParentContainsErrorRecordException
+ FullyQualifiedErrorId : ParameterArgumentValidationError,Microsoft.PowerShell.Commands.InvokeCommandCommand
Is there a way to set the session via a parameter or is this something you need to do outside this method?