I upgraded my system from Fedora 25 to 26, and after upgrading it rebooted and I got a black screen with a mouse pointer in middle but no GUI to make a login.

There is an error on booting which says

Failed to load kernel module

What may be the problem, what should I do to make things work?

I tried to boot with changing grub entry and nomodeset=0 but it comes to the same result. Also, I tried to boot with old kernels of Fedora 25.

I am using lightdm display manager with lightdm-webkit2-greeter having material theme.

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