[Q] unable to mount storage device on Galaxy grand neo gt-i9060 topic

hi Guys ! my probleme is that! after flashing my device on ODIN or on by CMW and after on TWRP , my device can't boot, can't restore anything !! Now, i using TWRP, after flashing on ODIN, it say Unable to mount data, to mount internal storage and No valid storage partitions found for MTP ! Please someone Can HELP ME !!!