Error while running velocity.py and fly.py examples

[Astik-2002]

Hello. While running the velocity.py example after installation, I'm getting this error

python3 velocity.py pybullet build time: Nov 28 2023 23:45:17 [INFO] BaseAviary.__init__() loaded parameters from the drone's .urdf: [INFO] m 0.027000, L 0.039700, [INFO] ixx 0.000014, iyy 0.000014, izz 0.000022, [INFO] kf 0.000000, km 0.000000, [INFO] t2w 2.250000, max_speed_kmh 30.000000, [INFO] gnd_eff_coeff 11.368590, prop_radius 0.023135, [INFO] drag_xy_coeff 0.000001, drag_z_coeff 0.000001, [INFO] dw_coeff_1 2267.180000, dw_coeff_2 0.160000, dw_coeff_3 -0.110000 startThreads creating 1 threads. starting thread 0 started thread 0 argc=2 argv[0] = --unused argv[1] = --start_demo_name=Physics Server ExampleBrowserThreadFunc started X11 functions dynamically loaded using dlopen/dlsym OK! X11 functions dynamically loaded using dlopen/dlsym OK! libGL error: MESA-LOADER: failed to open iris: /usr/lib/dri/iris_dri.so: cannot open shared object file: No such file or directory (search paths /usr/lib/x86_64-linux-gnu/dri:\$${ORIGIN}/dri:/usr/lib/dri, suffix _dri) libGL error: failed to load driver: iris libGL error: MESA-LOADER: failed to open iris: /usr/lib/dri/iris_dri.so: cannot open shared object file: No such file or directory (search paths /usr/lib/x86_64-linux-gnu/dri:\$${ORIGIN}/dri:/usr/lib/dri, suffix _dri) libGL error: failed to load driver: iris libGL error: MESA-LOADER: failed to open swrast: /usr/lib/dri/swrast_dri.so: cannot open shared object file: No such file or directory (search paths /usr/lib/x86_64-linux-gnu/dri:\$${ORIGIN}/dri:/usr/lib/dri, suffix _dri) libGL error: failed to load driver: swrast Creating context Failed to create GL 3.3 context ... using old-style GLX context Failed to create an OpenGL context

can someone please share how to solve this?