Can't install security update on HS. Any help?

https://cdn.discordapp.com/attachments/311940388565024769/439865856982515732/IMG_20180428_210936.jpg
https://cdn.discordapp.com/attachments/311940388565024769/439868643124314112/IMG_20180428_212046.jpg
After long time of being stuck:
https://cdn.discordapp.com/attachments/311940388565024769/439889430283550732/IMG_20180428_224302.jpg
https://cdn.discordapp.com/attachments/311940388565024769/439892429496254492/IMG_20180428_225026.jpg

My specs:
i5-6600
rx480 4gB
msi b150m provdh mobo

Everything was working almost fine from Sierra to High Sierra updates, I had only problem with converting my disk to APFS but format helped me.

I tried cleaning update cache, app store cache and cleaning nvram because I was forcing shutdown on being stuck and redownloaded update like seven times lol.

I use vanilla Clover, have updated kexts and so. Maybe my config is fault? But I don't know why since it was working to this time. Before the kextd stall 240s error I had crash log (when I tried to update, but I don't saved it to file) at working GUI/windows server at the end (white background on like-recovery screen).