How to Fix "Repair" Popup When Generating PPTX Slides Dynamically in Node.js

Question

I am using a Node.js script to dynamically generate PowerPoint slides (.pptx) by replacing placeholders with required data. Although the PPTX is generated successfully, when I open the file, PowerPoint shows a "Repair" popup. After repairing, the content displays correctly.

To resolve the issue, I have ensured the following:

• Slide relationships (_rels) are properly set up.
• Content types ([Content_Types].xml) are included.
• All tags related to the slides are added correctly in the generated PPTX (zip structure).

However, despite adding these elements, I still encounter the repair popup. When I manually create a PPTX file, it opens without any issues, but the dynamically generated ones continue to trigger the error.

Has anyone experienced this before? What could be causing this issue, and how can I generate error-free PPTX files programmatically in Node.js?

Any help or guidance would be appreciated!