Error Method is not implemented

Hi !
I write a code that generate Access Token. It is in JSON format but I extract only Access token  and that Access token I used to make Client and call Method.
Here I get access token by using this method 

accessToken1 = getAccess(); // Here I got Access Token,  getAccess() give only access token in string formate
System.out.println(accessToken1)  // It print Access Token 

Now I make a client 

DbxRequestConfig config = DbxRequestConfig.newBuilder("dropbox/java-tutorial").build();
DbxClientV2 dbxClientV2 = new DbxClientV2(config, accessToken1);

and call method and print

try {
    System.out.println("running");  
    System.out.println(dbxClientV2.users().getCurrentAccount());
} catch (UnsupportedOperationException uoe) {
    System.err.println("getCurrentAccount method not implemented: " + uoe.getMessage());
    // Handle or log the exception as needed
} catch (DbxApiException e) {
    throw new RuntimeException(e);
} catch (DbxException e) {
    throw new RuntimeException(e);
}

I got the output:

sl.Br4aZv3A4hhBNSSTZfPXQ6OrqJiqcbpQWW0FA3h1THML4DI0jT564fKrl7wvybXXt2sPYDs-C_N9dZoGotrvHCr3m7HZNEYQ86M_pgTUNem5-YN888QkTqLNgarWSDEnijjSb8-Qz6FA2LNHOQU8g5U
running
getCurrentAccount method not implemented: Method not implemented.

Means Access token print and then client generated enter to execute try block "running" (For debugging) is printed but when try to execute method then through error:   getCurrentAccount method not implemented: Method not implemented.

How I resolve this problem. I try to change dependencies but it not working.