Can not upload zip file for custom app

Hi, I am working on a custom app for the company. I am using the fdk interface to create the custom app. To test the workflow I install fdk and executed “fdk create”. I then zipped the folder with the file and tried to upload the zip file on the freshsales. I am getting an error “Oops! We only support app manifests with Node.js runtime versions 14, 18 and above” please assist with this since the node.js is on version 18.18.0

my manifest

{
  "platform-version": "2.3",
  "product": {
    "freshsales": {
      "location": {
        "left_nav_cti": {
          "url": "template.html",
          "icon": "icon.svg"
        },
        "lead_entity_menu": {
          "url": "template.html",
          "icon": "icon.svg"
        },
        "deal_entity_menu": {
          "url": "template.html",
          "icon": "icon.svg"
        },
        "contact_entity_menu": {
          "url": "template.html",
          "icon": "icon.svg"
        },
        "sales_account_entity_menu": {
          "url": "template.html",
          "icon": "icon.svg"
        }
      }
    }
  },
  "engines": {
    "node": "18.18.0",
    "fdk": "9.0.5"
  }
}

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