Reference-Error when compiling kaobook-class in overleaf community edition about overleaf

[Musicminion]

I can compile it on my self-hosted overleaf, maybe you need to update your texlive?

You should make a screenshot of the core error(usuallly in red color) that overleaf shows to you.

[JoshuaSokolowski]

I had the same problem but could fix it by installing Biber from source inside the container:

cd /home
wget https://github.com/plk/biber/archive/refs/tags/v2.19.zip
unzip v2.19.zip
cpan
> install Module::Build
> install PAR::Packer
> quit
perl ./Build.PL
./Build installdeps
./Build test
apt update
apt -y upgrade
apt install context
apt-get install libxml-libxslt-perl
./Build test
./Build install
biber --version
tlmgr install scheme-full
tlmgr update --self
tlmgr install scheme-full
mtxrun --generate
mktexlsr
updmap-sys
fmtutil-sys --all

I found all the necessary info in #1030
Notice that I had to install libxml-libxslt-perl via apt because the test failed first, so maybe it would be better to install this lib first. Hope this helps :)