guys, help please

So, guys i'm facing a big problem thats not letting me port roms anymore neither use my device, my htc desire 816g (mt6592) doesn't mount internal storage on all marshmallow roms, it works fine on lollipop and kitkat but all marshmallow roms doesn't work, even the ones that I used before and were working fine :(
PLS HELP ME FIX THIS PROBLEM, i've been facing it for around 4 days now :((

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