Failed to load #ness of backlight:acpi_video0

I am a Linux newbie. I have just installed manjaro Nibia, and when it is said to restart in the installer, after the restart, it is just freeze.

I can’t create my user account and log into my system. Just two lines are there. It is said that

Failed to start Load/Save #ness of backlight:acpi_video0

Failed to start Load/Save Backlight Brightness of backlight:amdgpu_bl1

There is an answer in this forum, but it is not very detailed. It is said to change some staff in the kernel. But I don’t know any step by step process