Okay, again...
Installed WM 6.5
Installed HSPL 2.08
Installed Radio 2.15.50.14
Installed MAGLDR
Installed TWRP
Made FAT32 and EXT4 partition using MiniTool PW
Flashed ROM with no app selected, RMNET, without SWAP
After first boot, while entering my gmail acc, I've got that error which brings me back to PIN lock screen
Next step was fixing permissions but the same thing happened and it's random, no matter what app/setting/something else I start. Even when I'm not doing anything, I'm getting that error.
Then I reflashed the ROM just with wiping DC and I've got the same error.
After that I entered TWRP and deleted ROM folder in NativeSD options. Checked manually and it was deleted. Installed it again and the same thing happened.
I hope it helps (actually I'm just repeating myself but little bit more detailed)