GameObject.Find breaks code with UnityEvent

I have set up a listener that fires UnityEvent but when function reaches GameObject.Find statement it just breaks the code without any error or warning, just stops there and game is going on.

NetworkingManager.OnMessageRecieved (called when message from server recieved) -> MatchModel.ServerReportResultUpdate (Invokes an UnityEvent) -> UI.OnResultChanged (function works until it reaches GameObject.Find statement).

NetworkingManager:

 using UnityEngine;
 using System.Net;
 using System;
 
 namespace Scripts.Networking
 {
     public class NetworkingManager
     {
         private static NetworkingManager instance;
         public static NetworkingManager Instance
         {
             get
             {
                 if (instance == null)
                 {
                     instance = new NetworkingManager();
                 }
                 return instance;
             }
         }
 
         // ---------- GETTING MESSAGES FROM THE SERVER ------------- //
         private void OnMessageRecieved(object sender, MessageReceivedEventArgs e)
         {
             //// Data dt; ///
             MatchModel.currentMatch.ServerReportResultUpdate(dt);
         }
     }
 }

MatchModel:

 using Scripts.Networking;
 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 using UnityEngine.Events;
 
 namespace Scripts.Models
 {
     public class ResultChangeEvent : UnityEvent<Data> { };
   
     public class MatchModel
     {
         public ResultChangeEvent OnResultChange;
         public static MatchModel currentMatch;
 
         public MatchModel(ushort id)
         {
             ID = id;
             OnResultChange = new ResultChangeEvent();
         }
 
         public void ServerReportResultUpdate(Data dt)
         {
             OnResultChange.Invoke(dt);
         }
     }
 }

UI:

 using Scripts.Models;
 using Scripts.Networking;
 using UnityEngine;
 using UnityEngine.UI;
 
 public class UI : MonoBehaviour
 {
     public void AddListeners()
     {
         MatchModel.currentMatch.OnResultChange.AddListener(OnResultChanged);
     }
 
     private void OnResultChanged(Data dt)
     {
         Debug.Log(" OK ");
         Text report = GameObject.Find("TextReport").GetComponent<Text>();
         Debug.Log(" BREAKS ABOVE");
         report.text = " dt: " + dt.x + " : " + dt.y;
     }
 }

EDIT:

If I change UI code to this it works ok, but it's some wonky workaround:

 using Scripts.Models;
 using Scripts.Networking;
 using UnityEngine;
 using UnityEngine.UI;
 
 public class UI : MonoBehaviour
 {
     public void AddListeners()
     {
         MatchModel.currentMatch.OnResultChange.AddListener(OnResultChanged);
     }

     bool flag = false;
     private void Update()
     {
         if (flag)
         {
             flag = false;
             Debug.Log(" OK ");
             Text report = GameObject.Find("TextReport").GetComponent<Text>();
             Debug.Log(" OK ");
             report.text = " dt: " + dt.x + " : " + dt.y;
         }
     }

     private void OnResultChanged(Data dt)
     {
         flag = true;
     }
 }

Any clues?