Sorry for inconvenience, .so should be rebuilt to run with older GLIBC on Debian Buster 10. Instructions for rebuild:
1) Install build tools and CMake:
sudo apt update
sudo apt install build-essential cmake
2) To compile under the default Debian Buster GCC 8.3, please, replace src/CMakeLists.txt with the following one https://gist.github.com/ATMI/5eac8bec3bbd5d2acb435c87d7c197ac to add C++ 17 filesystem compatibility to the compiler (link against stdc++fs).
3) Execute the following commands being inside the submission folder:
mkdir build
cd build
cmake ../src
cmake --build .
mv -f libtglang.so ..
mv -f tglang-tester ..
cd ..

I've installed VirtualBox https://cloud.debian.org/images/cloud/buster/20230917-1506/debian-10-nocloud-arm64-20230917-1506.raw and checked twice the instruction. Everything should work, thank you for cooperation!

Additionally you can find old submission with fixed .so and CMakeLists.txt here: https://drive.google.com/file/d/1zz9IaOEsKlO_wPxrXX77aNIzJtuxVC0B/view?usp=sharing

In our final tests, this submission received the following scores (out of 100):

Code/Other Detection: 34.4
Language Detection: 71.2
Average Time: 130ms per sample

Final Score: 21

This is an important message regarding your submission. The following issues have been discovered during preliminary testing:
"/lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.32' not found (required by ./libtglang.so)
/lib/x86_64-linux-gnu/libstdc++.so.6: version `GLIBCXX_3.4.32' not found (required by ./libtglang.so)
/lib/x86_64-linux-gnu/libstdc++.so.6: version `GLIBCXX_3.4.29' not found (required by ./libtglang.so)
/lib/x86_64-linux-gnu/libstdc++.so.6: version `GLIBCXX_3.4.26' not found (required by ./libtglang.so)"

You can provide further clarifications within the next 24 hours.