PDF library server upload
=========================

The upload archive contains the complete mPDF folder under the `mpdf/` directory.

Using the hosting file manager:
1. Open the deployed application's `app/invoice/` directory.
2. Upload `mpdf-upload.zip` there and extract it in that same directory.
3. Confirm the resulting path is `app/invoice/mpdf/mpdf.php`.
4. Confirm `app/invoice/mpdf/classes/`, `app/invoice/mpdf/ttfonts/`, `app/invoice/mpdf/ttfontdata/`, and `app/invoice/mpdf/tmp/` were uploaded too.
5. Ensure the hosting PHP version has the `mbstring` extension enabled.
6. Retry the invoice PDF download.

If the host cannot extract ZIP files, extract the archive locally and upload the
entire `mpdf` directory into `app/invoice/`, preserving all nested folders.
