error on the testing shiny app

Hello,
I tried loading my paf file on the web-based app, and I get this error message:

<img width="1054" alt="Image" src="https://github.com/user-attachments/assets/d4f24fba-0042-40bf-b1f6-bbb35f8314e6" />

The file was generated with minimap2, in a similar way that other alignments were made before and worked. The file has 128,000 lines, ~20 MB. Is size an issue?
Thanks,
Dario