How to Restore the Ubuntu Graphical Environment?

Question

Gnome

Hello everyone. I am connecting to a remote Ubuntu machine from PuTTY.
When I try to use the x11vnc command, I get an error

XOpenDisplay failed. No -display or DISPLAY.
caught XIO error:
21/03/2022 19:19:08 deleted 60 tile_row polling images.

It is assumed that the graphical environment has crashed.
Errors in var/syslog:

gnome-session[200438]: 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)
gnome-session[200438]: libGL error: failed to load driver: swrast
gnome-session[200438]: gnome-session-is-accelerated: No hardware 3D support.
gnome-session[200438]: X Error of failed request:  BadValue (integer parameter out of range for operation)
gnome-session[200438]:   Major opcode of failed request:  151 (GLX)
gnome-session[200438]:   Minor opcode of failed request:  3 (X_GLXCreateContext)
gnome-session[200438]:   Value in failed request:  0x0
gnome-session[200438]:   Serial number of failed request:  22
gnome-session[200438]:   Current serial number in output stream:  23
gnome-session[200433]: gnome-session-check-accelerated: GL Helper exited with code 256
gnome-session[200439]: libEGL warning: 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)
gnome-session-c[200439]: eglInitialize() failed
gnome-session[200433]: gnome-session-check-accelerated: GLES Helper exited with code 256
gnome-session[200337]: gnome-session-binary[200337]: WARNING: software acceleration check failed: Child process exited with code 1
gnome-session[200337]: gnome-session-binary[200337]: CRITICAL: We failed, but the fail whale is dead. Sorry....
gnome-session-binary[200337]: WARNING: software acceleration check failed: Child process exited with code 1
gnome-session-binary[200337]: CRITICAL: We failed, but the fail whale is dead. Sorry....

uname -a
Linux *** 5.13.0-35-generic #40~20.04.1-Ubuntu SMP Mon Mar 7 09:18:32 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux

sudo lshw -c video
  *-display
       description: VGA compatible controller
       product: UHD Graphics 630 (Desktop 9 Series)
       vendor: Intel Corporation
       physical id: 2
       bus info: [email protected]:00:02.0
       version: 02
       width: 64 bits
       clock: 33MHz
       capabilities: pciexpress msi pm vga_controller bus_master cap_list
       configuration: driver=i915 latency=0
       resources: irq:136 memory:d0000000-d0ffffff memory:c0000000-cfffffff ioport:3000(size=64) memory:c0000-dffff

Xorg -version

X.Org X Server 1.20.13
X Protocol Version 11, Revision 0
Build Operating System: linux Ubuntu
Current Operating System: Linux **** 5.13.0-35-generic #40~20.04.1-Ubuntu SMP Mon Mar 7 09:18:32 UTC 2022 x86_64
Kernel command line: BOOT_IMAGE=/boot/vmlinuz-5.13.0-35-generic root=UUID=a7955dc4-4fc9-44ba-a3dc-7e15a7973d0b ro quiet splash vt.handoff=7
Build Date: 14 December 2021  02:14:13PM
xorg-server 2:1.20.13-1ubuntu1~20.04.2 (For technical support please see http://www.ubuntu.com/support)
Current version of pixman: 0.38.4
        Before reporting problems, check http://wiki.x.org
        to make sure that you have the latest version.

glxinfo
Error: unable to open display

Willing to provide additional information.
How can I fix, do not reinstall the system?