How to install 32 bit library radxa E25 bulleye

I need to run a 32-bit application and I need to install multiarch for it but I get the following error

N: Skipping acquire of configured file ‘main/binary-i386/Packages’ as repository ‘https://radxa-repo.github.io/bullseye rockchip-bullseye InRelease’ doesn’t support architecture ‘i386’
N: Skipping acquire of configured file ‘main/binary-i386/Packages’ as repository ‘https://radxa-repo.github.io/bullseye bullseye InRelease’ doesn’t support architecture ‘i386’