Unable to generate the pdf document with images tags using Acrobat Services API

Team,

We are encountering issues with the PDF Services API when generating documents that include dynamic images.

To assist with troubleshooting, we have attached a sample project and the corresponding request JSON object to this ticket.

Steps to reproduce the issue:

1. Run the application (built with .NET Core and Angular).

2. Select the attached PDFTemplate using the ‘Select Template’ button

3. Enter data into the loaded form (two text fields and one image field).

4. Click the "Generate Document" button.

Observed Result: The document is generated, but the images are not replaced; the output still displays the placeholder tags.
Please help us in resolving this issue.
Note: Sample project source code can be downloaded using this link https://drive.google.com/file/d/1VVJid-uq7102Yzw203OAdPHVqqjOlqED/view?usp=sharing