Error installing build-essential on Ubuntu (AnLinux)

[http-hadi]

I’m running a legacy version of Termux (the last one available for Android 5). I installed Ubuntu using the script provided by AnLinux, and I can enter the environment successfully using: ./start-ubuntu.sh
However, when I try to install build-essential with:
apt-get install -y build-essential
I get this error:
error while loading shared libraries: libm.so.6: cannot stat shared object: operation not permitted
It seems like Ubuntu is unable to access libm.so.6 properly inside this setup, Any ideas on how to fix or work around this?