How to fix "Fatal error: Uncaught Microsoft\Graph\Generated\Models\ODataErrors\ODataError" issue?

Question

<?php

include 'vendor/autoload.php';

use Microsoft\Graph\Core\GraphClientFactory;
use Microsoft\Graph\GraphRequestAdapter;
use Microsoft\Graph\GraphServiceClient;
use Microsoft\Kiota\Abstractions\ApiException;
use Microsoft\Graph\Core\Authentication\GraphPhpLeagueAuthenticationProvider;
use Microsoft\Kiota\Authentication\Oauth\ClientCredentialContext;
use Microsoft\Graph\Generated\Users\Item\CalendarView\Item\EventItemRequestBuilderGetRequestConfiguration;
use Microsoft\Graph\Generated\Users\Item\UserItemRequestBuilderGetQueryParameters;
use Microsoft\Graph\Generated\Users\Item\UserItemRequestBuilderGetRequestConfiguration;
use Microsoft\Graph\Generated\Users\Item\Calendar\Events\EventsRequestBuilderGetRequestConfiguration;
use Microsoft\Graph\Generated\Users\Item\Calendars\CalendarsRequestBuilder;

echo '<pre>';
$tenantId = 'f8cdef31-a31e-4b4a-93e4-5f571e91255a';
$clientId = '981ecee8-1b95-4ce6-932d-f71ab583be34';
$clientSecret = 'zb-8Q~FB1TEFMAIv~tBNs_bPUq9HiEd6epylvcXk';
$scopes = ['calendars.Read', 'calendars.ReadBasic'];

$scopes = ['https://graph.microsoft.com/.default'];

$tokenRequestContext = new ClientCredentialContext(
        $tenantId,
        $clientId,
        $clientSecret
);

$graphServiceClient = new GraphServiceClient($tokenRequestContext, $scopes);

$result = $graphServiceClient->me()->calendars()->get()->wait();
print_r($result);

Answer 1

Hi @Dev MDSK

You should use try-catch to capture your error details to help us troubleshoot for you.

Judging from the script you provided, it should be an application-only context, so you won't be able to call the /me endpoint to get the logged in user's calendar, only the /users/{id} endpoint, as there is no user involved.

Also, make sure you have granted the calendars.Read application permission to the calling app. Afterwards, remove the dynamic permissions in the script, which are not supported in the client credentials flow.

$tenantId = 'f8cdef31-a31e-4b4a-93e4-5f571e91255a';
$clientId = '981ecee8-1b95-4ce6-932d-f71ab583be34';
$clientSecret = 'zb-8Q~FB1TEFMAIv~tBNs_bPUq9HiEd6epylvcXk';
$scopes = ['https://graph.microsoft.com/.default'];

$tokenRequestContext = new ClientCredentialContext(
        $tenantId,
        $clientId,
        $clientSecret
);

$graphServiceClient = new GraphServiceClient($tokenRequestContext, $scopes);

$result = $graphServiceClient->users()->byUserId('user-id')->calendars()->get()->wait();
print_r($result);

Hope this helps.

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