Webklex\PHPIMAP Modern Auth Not Working 365 - oauth-2.0

Question

As with most people, Microsoft are turning off basic authentication. This means we need to use Modern Auth to retrieve emails from a mailbox.
However,when we retrie the access token fails with "
Client error: `POST https://login.microsoftonline.com/aea9a7d8-73fb-41af-987b-6fe14277421e/oauth2/v2.0/token` resulted in a `400 Bad Request` response:\n
{"error":"unauthorized_client","error_description":"AADSTS700016: Application with identifier '\"014438b9-82dc-4a4c-9584 (truncated...)
"
Here is the code we have for retrieving and connecting to IMAP. I am passing actual email and password in usename and password field
/* Get the access Token */
$Secret = '**REMOVED**';
$AppID = '**REMOVED**';
$TenantID = '**REMOVED**';
$AccessToken = '';
try {
$guzzle = new \GuzzleHttp\Client(['headers' => ['User-Agent' => 'App-Token-Request']]);
$url = 'https://login.microsoftonline.com/'.$TenantID.'/oauth2/v2.0/token';
$token = json_decode($guzzle->post($url, [
'form_params' => [
'grant_type' => 'password',
'client_id' => $AppID,
'client_secret' => $Secret,
'scope' => 'https://graph.microsoft.com/.default', //'https://outlook.office365.com/IMAP.AccessAsUser.All',// 'https://graph.microsoft.com/.default',
'username' => '**REMOVED**',
'password' => '**REMOVED**',
],
])->getBody()->getContents());
$this->info(var_dump($token));
$AccessToken = $token->access_token;
} catch (\League\OAuth2\Client\Provider\Exception\IdentityProviderException $e) {
dd($e);
return redirect('/')->with('error', 'Error requesting access token')->with('errorDetail', json_encode($e->getResponseBody()));
}