Broken lockscreen issue topic

After update to latest firmware im facing to very annoying issue. When I restart my phone everything is OK but after entering pin code i get notification 'XPERIA stopped working'. My lockscreen gets black, showing time and other things but background is black - you can see it on picture. In other words, i am not able to choose lockscreen wallpaper and When I set one, its changes to black background.

Please help im very dissapointed. Every help is appreciated

Ps : im also facing problems with speaker etc.

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