Emoji not displayed in the picker

import android.content.ContentValues;

import android.content.Context;

import android.database.Cursor;

import android.database.sqlite.SQLiteBlobTooBigException;

import android.database.sqlite.SQLiteDatabase;

import androidx.lifecycle.ViewModelProvider;

import com.google.gson.Gson;

import com.google.gson.GsonBuilder;

import com.google.gson.annotations.SerializedName;

import com.google.gson.reflect.TypeToken;

import java.io.Serializable;

import java.net.IDN;

import java.util.ArrayList;

import java.util.List;

import app.fedilab.android.BaseMainActivity;

import app.fedilab.android.mastodon.client.endpoints.MastodonInstanceService;

import app.fedilab.android.mastodon.exception.DBException;

import app.fedilab.android.mastodon.helper.Helper;

import app.fedilab.android.mastodon.viewmodel.mastodon.InstancesVM;

import app.fedilab.android.sqlite.Sqlite;

import okhttp3.OkHttpClient;

import retrofit2.Call;

import retrofit2.Response;

import retrofit2.Retrofit;

import retrofit2.converter.gson.GsonConverterFactory;

public class EmojiInstance implements Serializable {

        }

    }

    private MastodonInstanceService init(String instance) {

        final OkHttpClient okHttpClient = Helper.myOkHttpClient(context);

        Retrofit retrofit = new Retrofit.Builder()

                .baseUrl("https://" + (instance != null ? IDN.toASCII(instance, IDN.ALLOW_UNASSIGNED) : null) + "/api/v1/")

                .addConverterFactory(GsonConverterFactory.create(Helper.getDateBuilder()))

                .client(okHttpClient)

                .build();

        return retrofit.create(MastodonInstanceService.class);

    }

    /**

     * Returns the emojis for an instance

     *

            Cursor c = db.query(Sqlite.TABLE_EMOJI_INSTANCE, null, Sqlite.COL_INSTANCE + " = '" + instance + "'", null, null, null, null, "1");

            return cursorToEmojiList(c);

        } catch (Exception e) {

            MastodonInstanceService mastodonInstanceService = init(instance);

            Call<List<Emoji>> emojiCall = mastodonInstanceService.customEmoji();

            if (emojiCall != null) {

                try {

                    Response<List<Emoji>> emojiResponse = emojiCall.execute();

                    if (emojiResponse.isSuccessful()) {

                        return emojiResponse.body();

                    }

                } catch (Exception err) {

                    err.printStackTrace();

                }

            }

            return null;

        }

    }