UnityContent.send Uncaught abort(176) Error

[thesoulkiller]

Hello !

First of all thank you for working on this kind of library, it's really helpful.
I'd like to point out an issue that I'm facing. I can perfectly catch the events thrown from Unity in React however I can't call a Unity function from React side. It gives error:

Uncaught abort(176) at Error\n    at jsStackTrace (…ttp://localhost:3000/static/js/bundle.js:133

I'm using the codes from documentation here
The React side:

export class App extends React.Component {
  constructor(props) {
    super(props);

    this.unityContent = new UnityContent(
      "game/WebBuild.json",
      "game/UnityLoader.js"
    );

    this.unityContent.on("GameOver", (score) => {
      console.log("score: ", score);
    });
  }

  onClick() {
    this.unityContent.send("WebCalls", "aaa", 10);
  }

  render() {
    return (
      <div>
        <button onClick={this.onClick.bind(this)}>Spawn!</button>
        <br />
        <Unity
          unityContent={this.unityContent}
        />
      </div>
    );
  }
}

The Unity 3d side:

public void aaa(int ID)
    {
        Text.text = "ID : " + ID;
    }

using TMPro;
using UnityEngine;

public class BackendCalls : MonoBehaviour
{
    public TextMeshProUGUI Text;

    public void aaa(int ID)
    {
        Text.text = "ID : " + ID;
    }
}

I've tried the below codes and I can receive the score in the React side.

GameOver: function (score) {
    ReactUnityWebGL.GameOver(score);
  },

[DllImport("__Internal")]
    private static extern void GameOver(int score);

    void Start()
    {
        GameOver(50);
    }

Versions:
Unity 2019.4.33f1
react-unity-webgl: "7.1.13"

Any help is appreciated
Thank you !

[thesoulkiller]

Apperantly there are similar issues at #304 #79 and #74 but none of them is worked for me. And the error I'm receiving is different.