Demon's souls black screen after a cutscene

After i defeat a boss called Fool's idol I go a bit further a cinematic appears and after it ends i get a black screen and i can only hear fire and changing items sound

this is what it said in logs when the black screen appears
E {PPU[0x100000a] Thread (Core.Res.FileLoader) [0x01e16090]} 'sys_fs_open' failed with 0x80010006 : CELL_ENOENT, “/dev_hdd1/cache//02/71f6422d77de934e3170d8280b9244a4” [1]


I have tried changing renderer and ppu spu decoders but nothing worked