PDF Viewer Displays Blank or Error on Mobile Browsers in Flutter Web for some PDF file

[LoadJulz]

Describe the bug
I have a Flutter Web app that handles different PDFs. One of the PDFs displays correctly without any issues. However, another PDF behaves differently: it displays properly on a desktop browser, but when accessed via a mobile browser, the behavior changes. On Android, it shows a blank page, and on iOS, an icon appears, which seems to indicate a corrupted PDF file. Additionally, the onDocumentError callback isn't being triggered.

To help diagnose the issue, I have attached both the failing PDF and the working PDF to this post. For reference, the failing PDF is 3.5 MB in size, while the working one is only 100 KB.

Does anyone have any idea what might be causing this behavior? Any insights or suggestions would be greatly appreciated.

failing.pdf

working.pdf