Install Exception-Linux Mint-libGL error: MESA-LOADER

Greetings to All:
linux Mint 21.3 - Acer Laptop “An exception occurred during fetch of list of sys display settings.”

libGL error: MESA-LOADER: failed to open iris: /usr/lib/dri/iris_dri.so - no such file or directory
(search paths /usr/lib/x86_64-linux-gnu/dri:$${ORIGIN}/dri:/usr/lib/dir, suffix _dri)

Above detail repeated once again for iris_dri.os and once for swrast_dri.so. files can’t be found or wrong version?

navigator appears and and seems to operate. (base) prefix appears in terminal. Both of these files exist on the system and appear at /usr/lib/x86_64-linux-gnu/dri/. Not sure what is going on but looking to get a clean install. Entire installation instructions followed closely.

Thanks in advance for any and all comments or suggestions. John Adcock