ImportError: No yaml library available.

This error message indicates that the Python interpreter is unable to locate or import the required YAML library. YAML (YAML Ain't Markup Language) is a data serialization format commonly used in configuration files and data exchange between applications.

To resolve this error, you need to install the YAML library. Here are the steps to install the PyYAML library using pip:

1. Open the command prompt or terminal window.
2. Type the following command and press Enter: `pip install pyyaml`
3. Wait for the installation to complete.
4. Try running your Python script again.

If you are still facing the same error, you may need to check if the YAML library is installed correctly or try reinstalling it.