As stated in the error message displayed, you might not have installed the Gstreamer library correctly.
Typically, MathWorks Technical Support does not debug gstreamer installation issues.
You can first try to verify you have installed gstreamer correctly by using the libraries outside MATLAB. For example:
1. Execute a simple C/C++ program in the your machine that uses gstreamer header files and libraries will help in isolating if the installation was successful or not.
2. If you are unable to write a standalone C code, you can also try to use the utility gst-launch in your system prompt:
> gst-launch-1.0 playbin uri=file:[path_to_some_filename]
If you have verified that you can use the gstreamer libraries successfully outside of MATLAB but still receiving the same error message when calling "audioread", you can contact MathWorks Technical Support for further troubleshooting steps.