error workflow

error

{
  "nodes": [
    {
      "parameters": {},
      "name": "Start",
      "type": "n8n-nodes-base.start",
      "typeVersion": 1,
      "position": [
        250,
        300
      ]
    },
    {
      "parameters": {
        "fromEmail": "devops@domain.com",
        "toEmail": "sumesh@domain.com {{undefined}} {{$parameter[\"attachments\"]}}",
        "subject": "workflow with name: {{$node[\"Error Trigger\"].json[\"workflow\"][\"name\"]}} failed to execute",
        "text": "Your workflow with ID: {{$node[\"Error Trigger\"].json[\"workflow\"][\"id\"]}} and name: {{$node[\"Error Trigger\"].json[\"workflow\"][\"name\"]}} failed to execute",
        "options": {
          "allowUnauthorizedCerts": false
        }
      },
      "name": "Send Email1",
      "type": "n8n-nodes-base.emailSend",
      "typeVersion": 1,
      "position": [
        800,
        300
      ],
      "notesInFlow": true,
      "credentials": {
        "smtp": {
          "id": "1",
          "name": "SMTP account"
        }
      },
      "notes": "send failure mail"
    },
    {
      "parameters": {},
      "name": "Error Trigger",
      "type": "n8n-nodes-base.errorTrigger",
      "typeVersion": 1,
      "position": [
        500,
        300
      ]
    }
  ],
  "connections": {
    "Error Trigger": {
      "main": [
        [
          {
            "node": "Send Email1",
            "type": "main",
            "index": 0
          }
        ]
      ]
    }
  }
}