Error on sending HTML email with Amazon SES

Hi,

We have detected next error when trying to send emails in HTML using Amazon SES:

We provide sample task to test error. (from email must be allowed to send emails by Amazon SES):

{
  "name": "test_email_ses",
  "nodes": [
{
  "parameters": {},
  "name": "Start",
  "type": "n8n-nodes-base.start",
  "typeVersion": 1,
  "position": [
    250,
    300
  ]
},
{
  "parameters": {
    "isBodyHtml": true,
    "subject": "=Aqui tienes tu regalo!",
    "body": "=Hola {{$node[\"Get Parsed Name\"].json[\"message\"][\"firstname\"]}}!\n<br><br>\nAquí tienes las capturas prometidas:<br>\n\n<br><br>\n\n<br><br>\n¿Necesitas generar capturas de pantalla en masa? ¿Sabes que puedes hacerlo con <a href=\"https://uproc.io\" target=\"_blank\">uProc</a> desde <a href=\"https://n8n.io/\" target=\"_blank\">n8n</a>, <a href=\"https://www.integromat.com/en/integrations/uproc\" target=\"_blank\">Integromat</a>, <a href=\"https://zapier.com/apps/uproc/integrations\" target=\"_blank\">Zapier</a> o <a href=\"https://www.appypie.com/connect/apps/uproc/integrations\" target=\"_blank\">AppyPie</a>?<br>\n<a href=\"https://calendly.com/uproc/15min\" target=\"_blank\">Explícame</a> lo que necesitas hacer y te echo un cable!\n<br><br>\nMiquel\n<br><br>\nP.D.: Este regalo se ha enviado con uproc.io y n8n.io creando una tarea similar a https://n8n.io/workflows/857",
    "fromEmail": "[email protected]",
    "toAddresses": [
      "[email protected]"
    ],
    "additionalFields": {}
  },
  "name": "AWS SES",
  "type": "n8n-nodes-base.awsSes",
  "typeVersion": 1,
  "position": [
    450,
    300
  ],
  "credentials": {
    "aws": "ses"
  }
}
  ],
  "connections": {
"Start": {
  "main": [
    [
      {
        "node": "AWS SES",
        "type": "main",
        "index": 0
      }
    ]
  ]
}
  },
  "active": false,
  "settings": {},
  "id": "129"
}

Thanks!