Microsoft Teams Connector Configuration Save Failure

I'm working on creating a custom connector for Microsoft Teams. I've created one based on the github tutorial repo. Everything is working fine but when I hit the save button nothing happens, seems like saveEvent.notifySuccess() is not working. I'm using React for the config page.

Any help will be appreciated.

Config Page MSTeam implementation: Config Page MSTeam implementation

Express server saveConfig: Express server saveConfig

Screen after saving: Screen after saving

{
    "$schema": "https://developer.microsoft.com/en-us/json-schemas/teams/v1.3/MicrosoftTeams.schema.json",
    "manifestVersion": "1.3",
    "version": "1.0.0",
    "id": "23772851-b720-4f99-ae35-3531957cb1c7",
    "packageName": "com.demo.test",
    "developer": {
        "name": "Laxman Sharma",
        "websiteUrl": "https://www.google.com",
        "privacyUrl": "https://www.google.com/",
        "termsOfUseUrl": "https://www.google.com/"
    },
    "icons": {
        "color": "color.png",
        "outline": "outline.png"
    },
    "name": {
        "short": "Test",
        "full": ""
    },
    "description": {
        "short": "Test Connector App",
        "full": "This app allows the team tp quickly do something."
    },
    "accentColor": "#40497E",
    "bots": [
        {
            "botId": "5e55cea4-4efc-4eec-9156-c6aa78b1622c",
            "scopes": [
                "personal",
                "team"
            ],
            "supportsFiles": false,
            "isNotificationOnly": true
        }
    ],
    "connectors": [
        {
            "connectorId": "f1014037-dad1-4da2-83af-479708155849",
            "configurationUrl": "https://e48f6f19.ngrok.io/",
            "scopes": [
                "team"
            ]
        }
    ],
    "permissions": [
        "identity",
        "messageTeamMembers"
    ],
    "validDomains": [
        "e48f6f19.ngrok.io"
    ]
}

Solution

I had similar issues at the start, as Wajeed already mentioned please double check that:

You are only using domains that are within valid domain list in manifest
You also need to have the same urls set in Connector Portal
Double check you're really using the connector you want to use