OK, from what I can tell, there is indeed an issue with your OpenGL setup. This is the relevant bit from the (lengthy) output of glxinfo:
This shows that the display you’re using is not using the Nvidia drivers, but the open-source mesa ones, and what’s more it’s falling back on the software renderer (llvmpipe) – without GPU acceleration. On top of that, that software renderer only supports OpenGL 3.1, which explains why it won’t allow mrview to run (we need OpenGL 3.3).
So you’d need to figure out why your session isn’t running with the expected drivers. I suspect this will have something to do with this:
That suggests you’re not running within a graphical environment – I get that output if I log on to a remote system via SSH, or through one of my system’s virtual terminals. Normally, I would expect you to get either x11 or wayland as the output here…
But if you are running this over a remote connection, then please look through this page – main point is it’s very difficult to get that to work… On the other hand, if you are running locally, and the terminal you typed that into was launched within a local desktop session, then I’m not sure what’s going on…