我正在尝试为get和post方法使用microsoftgraphapi。java代码：

IGraphServiceClient graphClient = 
             GraphServiceClient.builder().authenticationProvider(authProvider)
            .buildClient();
 graphClient.me().calendar().events().buildRequest().post(event);
 User user = graphClient.me().buildRequest().get();

点击api时，我得到以下错误：
线程“main”java.lang.nosuchmethoderror中出现异常：okhttp3.request$builder.tag（ljava/lang/class；ljava/lang/object；）lokhttp3/请求$builder；在com.microsoft.graph.http.corehttpprovider.gethttprequest（corehttpprovider。java:257)在com.microsoft.graph.http.corehttpprovider.sendrequestinternal（corehttpprovider。java:397)在com.microsoft.graph.http.corehttpprovider.send（corehttpprovider。java:220)在com.microsoft.graph.http.corehttpprovider.send（corehttpprovider。java:200)在com.microsoft.graph.http.baserequest.send（baserequest。java:345)在com.microsoft.graph.requests.extensions.eventrequest.post（eventrequest。java:135)在com.microsoft.graph.requests.extensions.eventcollectionrequest.post（eventcollectionrequest。java:75)
graph和graph auth api的maven版本为：

<!-- https://mvnrepository.com/artifact/com.microsoft.graph/microsoft-graph -->
    <dependency>
        <groupId>com.microsoft.graph</groupId>
        <artifactId>microsoft-graph</artifactId>
        <version>2.5.0</version>
    </dependency>

    <!-- https://mvnrepository.com/artifact/com.microsoft.graph/microsoft-graph-auth -->
    <dependency>
        <groupId>com.microsoft.graph</groupId>
        <artifactId>microsoft-graph-auth</artifactId>
        <version>0.3.0-SNAPSHOT</version>
    </dependency>

请帮我解决这个问题？
这是主要方法：

public static void main(String[] args) {

    UsernamePasswordProvider authProvider = new UsernamePasswordProvider("{client_id}",
            Arrays.asList("https://graph.microsoft.com/.default"),
            "{username}", "{password}", NationalCloud.Global,
            "{tenant_id}", "{client_secret}");

    IGraphServiceClient graphClient = GraphServiceClient.builder().authenticationProvider(authProvider)
            .buildClient();

    Event event = new Event();
    event.subject = "Let's go for lunch";
    ItemBody body = new ItemBody();
    body.contentType = BodyType.HTML;
    body.content = "Does mid month work for you?";
    event.body = body;
    DateTimeTimeZone start = new DateTimeTimeZone();
    start.dateTime = "2021-01-15T12:00:00";
    start.timeZone = "Pacific Standard Time";
    event.start = start;
    DateTimeTimeZone end = new DateTimeTimeZone();
    end.dateTime = "2021-01-15T14:00:00";
    end.timeZone = "Pacific Standard Time";
    event.end = end;
    Location location = new Location();
    location.displayName = "";
    event.location = location;
    LinkedList<Attendee> attendeesList = new LinkedList<Attendee>();
    Attendee attendees = new Attendee();

    EmailAddress emailAddress = new EmailAddress();
    emailAddress.address = "abc@gmail.com";
    emailAddress.name = "Abcd";
    attendees.emailAddress = emailAddress;
    attendees.type = AttendeeType.REQUIRED;
    attendeesList.add(attendees);

    event.attendees = attendeesList;

    graphClient.me().calendar().events().buildRequest().post(event);

    log.info("created the event");

}