Android InvalidAccessTokenException at attempt to load file after auth.

I've got InvalidAccessTokenException at any attempt to upload file to Dropbox.

For authorization I use next algorithm:

Auth.startOAuth2Authentication(context, APP_KEY);

//granting access
//previous activity is reopened

String accessToken = Auth.getOAuth2Token();
DbxRequestConfig requestConfig = DbxRequestConfig.newBuilder(CLIENT_ID)
                    .withHttpRequestor(OkHttp3Requestor.INSTANCE)
                    .build();
DbxClientV2 client = new DbxClientV2(requestConfig, accessToken);
DropboxClientFactory.getClient().files().uploadBuilder(ADDRESS_IN_DROPBOX)
                            .uploadAndFinish(inputStream);

 

which returns InvalidAccessTokenException.

Maybe I/m doing something wrong.

PS I used Android project as example - https://github.com/dropbox/dropbox-sdk-java/tree/master/examples/android