not able to attach tauri command to button

[davnav]

I tried to attach a tauri command to React based "click" button, but I am getting below error. Please advise

error:

Do I need to make any changes in tauri.conf.json ?

After saving the rust code, I am just running yarn start . Please advise if I missed any step ?
Thank you

[nothingismagick]

Please always check that you are on the latest version by running tauri info with yarn, npm, pnpm, or cargo. Also, please share your tauri.conf.json

[davnav]

{
  "package": {
    "productName": "tauriexp",
    "version": "0.1.0"
  },
  "build": {
    "distDir": "../build",
    "devPath": "http://localhost:3000",
    "beforeDevCommand": "yarn start",
    "beforeBuildCommand": "yarn build"
  },
  "tauri": {
    "bundle": {
      "active": true,
      "targets": "all",
      "identifier": "com.tauri.dev",
      "icon": [
        "icons/32x32.png",
        "icons/128x128.png",
        "icons/128x128@2x.png",
        "icons/icon.icns",
        "icons/icon.ico"
      ],
      "resources": [],
      "externalBin": [],
      "copyright": "",
      "category": "DeveloperTool",
      "shortDescription": "",
      "longDescription": "",
      "deb": {
        "depends": [],
        "useBootstrapper": false
      },
      "macOS": {
        "frameworks": [],
        "useBootstrapper": false,
        "exceptionDomain": "",
        "signingIdentity": null,
        "providerShortName": null,
        "entitlements": null
      },
      "windows": {
        "certificateThumbprint": null,
        "digestAlgorithm": "sha256",
        "timestampUrl": ""
      }
    },
    "updater": {
      "active": false
    },
    "allowlist": {
      "all": true
    },
    "windows": [
      {
        "title": "Mytauri",
        "width": 800,
        "height": 600,
        "resizable": true,
        "fullscreen": false
      }
    ],
    "security": {
      "csp": null
    }
  }
}

Above is my tauri.conf.json

[FabianLars]

tauri's IPC only works in tauri windows, not in your browser. To start tauri in dev mode you need to run yarn tauri dev instead of yarn start (if yarn start is not set as a beforeDevCommand in tauri.conf.json then you need to run that in a different terminal too).

If you absolutely need to have it working in a browser (at dev time) a combination of https://github.com/tauri-apps/tauri-plugin-localhost and https://github.com/tauri-apps/tauri-invoke-http should work (but no promises that it works with the latest rc versions)

[davnav]

Below is the logs for yarn tauri dev.
looks like build failed. is that mean my rust program has some issue !