[RISOLTO] Caricare un file su Google Drive: errore "was Nothing"

Ciao a tutti, sto cercando di capire come uploadare un file su google drive e cercando su google ho trovato come fare, solo che con il codice che ho trovato, modificato con i miei dati, VS2022 mi restituisce, sulla riga “Dim request As PermissionsResource.CreateRequest = moService.Permissions.Create(permission, oFile.Id)” l'errore: " System.NullReferenceException HResult=0x80004003 Messaggio=Riferimento a un oggetto non impostato su un'istanza di oggetto"
Mi aiutate a risolvere? Specifico che ho installato, tramite Nuget, Google API v3 e ho messo i dati corretti su ClientID e ClientSecret (omessi per privacy):

Imports Google.Apis.Auth
Imports Google.Apis.Download
Imports Google.Apis.Drive.v3
Imports Google.Apis.Auth.OAuth2
Imports Google.Apis.Services
Imports System.Threading
Imports Google.Apis.Drive.v3.Data
Imports Google.Apis.Upload



Public Class Form1
    Private moService As DriveService = New DriveService
    Private msViewLink As String = ""

    Private Sub CreateService()

        Dim ClientId = "xxxxxxxxxxxxxxxxxxxxxxxxx"
        Dim ClientSecret = "xxxxxxxxxxxxxxxxxxxxxxxx"

        Dim MyUserCredential As UserCredential = GoogleWebAuthorizationBroker.AuthorizeAsync(New ClientSecrets() With {.ClientId = ClientId, .ClientSecret = ClientSecret}, {DriveService.Scope.Drive}, "user", CancellationToken.None).Result
        moService = New DriveService(New BaseClientService.Initializer() With {.HttpClientInitializer = MyUserCredential, .ApplicationName = "GoogleAPI"})

    End Sub

    Private Sub UploadFile()

        ' Checking if the Service is still alive, if not create the service again.
        If moService.ApplicationName <> "GoogleAPI" Then CreateService()

        Dim oGDriveFile As New File()

        oGDriveFile.Name = "prova.pdf" ' Set your File Name here.
        oGDriveFile.Description = "descrizione" ' Set a meaningful description, I had set the same name as my project name
        oGDriveFile.MimeType = "application/pdf" ' You must set your MIME type carefully. Refer to the table above

        Dim bArrByteArray As Byte() = System.IO.File.ReadAllBytes("C:/Users/marco/OneDrive/Desktop/prova.pdf") ' Your File Path from where you would want to upload from.
        Dim oStream As New System.IO.MemoryStream(bArrByteArray)

        Dim oUploadRequest As FilesResource.CreateMediaUpload

        oUploadRequest = moService.Files.Create(oGDriveFile, oStream, oGDriveFile.MimeType)

        oUploadRequest.Fields = "id"
        oUploadRequest.Alt = FilesResource.CreateMediaUpload.AltEnum.Json

        oUploadRequest.Upload()

        Dim oFile As File = oUploadRequest.ResponseBody

        ' Setting this permission will allow anyone having the link to directly download the file. 
        ' Google Drive, will not show any login page to the user, while attempting to download the file.
        ' The below two blocks are imperative.
        Dim permission As New Google.Apis.Drive.v3.Data.Permission()
        permission.Type = "anyone"
        permission.Role = "reader"
        permission.AllowFileDiscovery = True

        Dim request As PermissionsResource.CreateRequest = moService.Permissions.Create(permission, oFile.Id)
        request.Fields = "id"
        request.Execute()

        If Not IsNothing(oFile) Then

            msViewLink = " https://drive.google.com/uc?id=" & oFile.Id
        Else
            Cursor.Current = Cursors.Default
            MessageBox.Show("Unable to contact Google Drive. Check your Connection.", "Title", MessageBoxButtons.OK, MessageBoxIcon.Error, MessageBoxDefaultButton.Button1)
            Exit Sub
        End If

    End Sub

    Private Sub Button2_Click(sender As Object, e As EventArgs) Handles Button2.Click
        UploadFile()
    End Sub
End Class

EDIT: scusate, dopo giorni che ci provavo ho capito l'errore subito dopo aver postato la domanda. Lascio tutto perchè magari potrà servire a qualcuno…il codice era corretto, dovevo solo abilitare l'API dal Google Cloud Console