Replace Smart Object Photoshop Api

I'm trying to dynamically change the image file in a .pds layer. Using the Photoshop api. For some reason i'm getting the error type 'MethodNotAllowed'.

import fetch from 'node-fetch';

// Configura las URLs usando ngrok
const PSD_FILE_URL = 'https://ccc2-190-153-141-181.ngrok-free.app/your-psd-file.psd';
const OUTPUT_URL = 'https://www.dropbox.com/scl/fi/jt5xfao0sptp77lcrnqvw/output.psd'


export async function replaceSmartObject(newContentUrl, token, apiKey) {
    
    const data = {
        "inputs": [
            {
                "storage": "external",
                "href": PSD_FILE_URL
            }
        ],
        "options": {
            "layers": [
                {
                    "name": "layer_to_change",
                    "input": {
                        "storage": "external",
                        "href": newContentUrl,
                    },
                }
            ]
        },
        "outputs": [
            {
                "storage": "dropbox",
                "href": OUTPUT_URL,
                "type": "image/vnd.adobe.photoshop",
                "overwrite": true
            }
        ]
    };

    const response = await fetch('https://image.adobe.io/pie/psdService/smartObject', {
        method: 'POST',
        headers: {
            'Authorization': `Bearer ${token}`,
            'Content-Type': 'application/json',
            'x-api-key': apiKey
        },
        body: JSON.stringify(data)
    });

    if (!response.ok) {
        const error = await response.json();
        throw new Error(`Error: ${error.message}`);
    }

    return response.json();
}

PSD original file and the input image file are in my local machine. I'm having problems when running the script. For some reason I'm getting this error:

Operation status: {
  jobId: '9cccaacb-23a2-4f18-aea2-9038ee223c6c',
  outputs: [
    {
      input: 'https://ccc2-190-153-141-181.ngrok-free.app/your-psd-file.psd',
      status: 'failed',
      created: '2024-06-16T08:40:46.282Z',
      modified: '2024-06-16T08:40:49.256Z',
      errors: [Object]
    }
  ],
  _links: {
    self: {
      href: 'https://image.adobe.io/pie/psdService/status/9cccaacb-23a2-4f18-aea2-9038ee223c6c'
    }
  }
}
Error details: {
  code: 405,
  title: 'Internal Service Error',
  type: 'MethodNotAllowed'
}
^C
tomasleblanc@Tomass-MacBook-Pro MerchVisor % node server.js
Server running on http://localhost:3000
Esperando 5 segundos antes de verificar el estado...
Operation status: {
  jobId: 'ad009007-25df-415f-992d-18f0ec54c92a',
  outputs: [
    {
      input: 'https://ccc2-190-153-141-181.ngrok-free.app/your-psd-file.psd',
      status: 'failed',
      created: '2024-06-16T08:47:21.38Z',
      modified: '2024-06-16T08:47:23.835Z',
      errors: [Object]
    }
  ],
  _links: {
    self: {
      href: 'https://image.adobe.io/pie/psdService/status/ad009007-25df-415f-992d-18f0ec54c92a'
    }
  }
}
Error details: {
  code: 405,
  title: 'Internal Service Error',
  type: 'MethodNotAllowed'
}