Problem with CUDA Ubuntu 20.04 repository

I have encountered a problem with CUDA package repository for Ubuntu 20.04 located at Index of /compute/cuda/repos/ubuntu2004/x86_64
The Packages file has strange lines before package definitions, for example:

 63 bytes,     1 lines      shlibs               
358 bytes,    11 lines      symbols              
 71 bytes,     2 lines      triggers             

Package: libnvidia-compiler

This causes an error when trying to install cuda, because apt does not parse this file correctly and reports missing dependencies. Where should I report this problem?