@MrT10001 I get the same error ,
I don't know if it matters because there was a wipe and right now it can't access Android.

@baspax1
also that is the current state while is stuck on rebooting

@MrT10001
I get quickly on fastboodD

PS C:\Users\Chris\Desktop\platform-tools_r30.0.0-windows\platform-tools>  ./fastboot reboot fastboot
Rebooting into fastboot                            OKAY [  0.005s]

But i run below command and get message:
PS C:\Users\Chris\Desktop\platform-tools_r30.0.0-windows\platform-tools> ./fastboot format:ext4 userdata
< waiting for any device >
and seems to waiting for device..

also tried to reboot to bootloader and i went to fastboot(without D)
tried to re run the installation and now the ubports stuck on Rebooting - Rebooting to fastbootD ,
on tablet is already on fastbootD

can i run the command: ./fastboot format:ext4 userdata on fastbood??

===========
UDPATE

I managed to complete the format:ext4:

PS C:\Users\Chris\Desktop\platform-tools_r30.0.0-windows\platform-tools> .\fastboot devices
HPV3M30P        fastboot
PS C:\Users\Chris\Desktop\platform-tools_r30.0.0-windows\platform-tools> ./fastboot format:ext4 userdata
mke2fs 1.45.4 (23-Sep-2019)
Creating filesystem with 13782267 4k blocks and 3448832 inodes
Filesystem UUID: ab7af7ba-06e4-11ef-9354-3174c3e6d4f0
Superblock backups stored on blocks:
        32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208,
        4096000, 7962624, 11239424

Allocating group tables: done
Writing inode tables: done
Creating journal (65536 blocks): done
Writing superblocks and filesystem accounting information: done

Sending 'userdata' (316 KB)                        OKAY [  0.014s]
Writing 'userdata'                                 OKAY [  0.063s]
Finished. Total time: 0.328s
PS C:\Users\Chris\Desktop\platform-tools_r30.0.0-windows\platform-tools>  ./fastboot reboot fastboot
Rebooting into fastboot                            OKAY [  0.004s]
< waiting for any device >
fastboot: error: Failed to boot into userspace fastboot; one or more components might be unbootable.
PS C:\Users\Chris\Desktop\platform-tools_r30.0.0-windows\platform-tools>

Then I proceeded to follow the procedure exactly, entered the bootloader and launched ubports, which immediately recognized the tablet. I clicked continue on the ubports reminder to enter bootloader, and it automatically proceeded with the process. The tablet restarted, briefly entered the "recovery screen", and then reached fastbootD where it has been stuck for the past 5 minutes.
The current situation is that the tablet is in fastbootD and the ubports installer shows >Rebooting / Rebooting to fastbootD.

Every time it does this, I know that if I now press reboot to bootloader from the fastbootD menu it will proceed, but in ubports it will show an error.
Could it be due to the version of ubports, or the cable I'm using to connect to the type C port on the laptop?

Good evening,

I am encountering a problem with the installation, even though I have exactly the compatible model:
Tab M10 HD Wifi X306F 64GB / 4GB RAM - Android 11

The installation was done on Windows 10 64bit. I successfully unlocked the bootloader by following these steps:
https://whatmydevice.com/unlock/lenovo-tab-m10-hd-gen-2

Then I tried running the ubports-installer_0.10.0_win_x64 and chose the correct option: lenovo smart tab m10 hd 2nd gen wifi

I tried this process several times because sometimes ubports would say success and then during the installation on the tablet, the error I also have in the screenshot would appear, and other times an error appeared on ubports and I proceeded by pressing ignore. However, whenever I reached the installation, it would stop in the middle and the problem "no space left on device" would appear.
Please help me, I have this tablet and with the Stock ROM it is very slow, I see that I meet all the requirements to install ubuntu touch but I am not succeeding.