No package pybind11 available.

This error message typically indicates that the Pybind11 package is not installed on your system. Pybind11 is a package that allows you to create Python bindings for C++ code.

To resolve this issue, you can try installing Pybind11 using pip:

pip install pybind11

Alternatively, if you are using a Linux distribution, you can try installing Pybind11 using your distribution's package manager. For example, on Ubuntu or Debian, you can run:

sudo apt-get install pybind11-dev

If you are using a different distribution, the package name and installation method may be different, so you may need to consult your distribution's documentation or search online for instructions specific to your setup.