Firebase Remote Config fetch error on MacOS 10.15.6

Hello. I'm getting this weird error when I try getting values with Firebase Remote Config on my MacBook, and I can't seem to find the cause of this.

I'm currently using the latest version of Unity Firebase Remote Config Plugin, with cocoapos installed. Here is the script I use to fetch data:

 using System;
 using System.Collections;
 using System.Collections.Generic;
 using System.Threading.Tasks;
 using Firebase.Extensions;
 using UnityEngine;
 
 public class TestRemote : MonoBehaviour
 {
     // Start is called before the first frame update
     void Start()
     {
         Firebase.FirebaseApp.CheckAndFixDependenciesAsync().ContinueWith(task => {
             var dependencyStatus = task.Result;
             if (dependencyStatus == Firebase.DependencyStatus.Available)
             {
                 InitializeFirebase();
                 // Create and hold a reference to your FirebaseApp,
                 // where app is a Firebase.FirebaseApp property of your application class.
                 //app = Firebase.FirebaseApp.DefaultInstance;
 
                 // Set a flag here to indicate whether Firebase is ready to use by your app.
             }
             else
             {
                 UnityEngine.Debug.LogError(System.String.Format(
                   "Could not resolve all Firebase dependencies: {0}", dependencyStatus));
                 // Firebase Unity SDK is not safe to use here.
             }
         });
     }
 
     void InitializeFirebase()
     {
         // [START set_defaults]
         System.Collections.Generic.Dictionary<string, object> defaults =
           new System.Collections.Generic.Dictionary<string, object>();
 
         // These are the values that are used if we haven't fetched data from the
         // server
         // yet, or if we ask for values that the server doesn't have:
         defaults.Add("config_test_string", "default local string");
         defaults.Add("config_test_int", 1);
         defaults.Add("config_test_float", 1.0);
         defaults.Add("config_test_bool", false);
 
         Firebase.RemoteConfig.FirebaseRemoteConfig.SetDefaults(defaults);
         // [END set_defaults]
         Debug.Log("RemoteConfig configured and ready!");
         FetchDataAsync();
     }
 
     public Task FetchDataAsync()
     {
         Debug.Log("Fetching data...");
         System.Threading.Tasks.Task fetchTask = Firebase.RemoteConfig.FirebaseRemoteConfig.FetchAsync(
             TimeSpan.Zero);
         return fetchTask.ContinueWithOnMainThread(FetchComplete);
     }
 
     void FetchComplete(Task fetchTask)
     {
         if (fetchTask.IsCanceled)
         {
             Debug.Log("Fetch canceled.");
         }
         else if (fetchTask.IsFaulted)
         {
             Debug.Log("Fetch encountered an error.");
         }
         else if (fetchTask.IsCompleted)
         {
             Debug.Log("Fetch completed successfully!");
         }
 
         var info = Firebase.RemoteConfig.FirebaseRemoteConfig.Info;
         switch (info.LastFetchStatus)
         {
             case Firebase.RemoteConfig.LastFetchStatus.Success:
                 Firebase.RemoteConfig.FirebaseRemoteConfig.ActivateFetched();
                 Debug.Log(String.Format("Remote data loaded and ready (last fetch time {0}).",
                                        info.FetchTime));
                 break;
             case Firebase.RemoteConfig.LastFetchStatus.Failure:
                 switch (info.LastFetchFailureReason)
                 {
                     case Firebase.RemoteConfig.FetchFailureReason.Error:
                         Debug.Log("Fetch failed for unknown reason");
                         break;
                     case Firebase.RemoteConfig.FetchFailureReason.Throttled:
                         Debug.Log("Fetch throttled until " + info.ThrottledEndTime);
                         break;
                 }
                 break;
             case Firebase.RemoteConfig.LastFetchStatus.Pending:
                 Debug.Log("Latest Fetch call still pending.");
                 break;
         }
         Debug.Log(Firebase.RemoteConfig.FirebaseRemoteConfig.GetValue("config_test_string").StringValue);
     }
 }
 

I have been using Firebase Remote Config for some time now but this is the first time I get this error, the code and plugin still run normally on Window, I try using the older ver of the plugin but still no luck. Sorry for the bad English. Thanks.