[REVENANT MASK bugged, can't finish the quest]

when it comes the second time to find the weird eidilon essence of the lost one near the lake it never showing up the next location, even in the map. i saw some youtube video to complete the quest and when it comes the second time to find that thing nakak will say to find the other location showed in the map anc contact him when you found it, but that's not for me, at the end of the conversation nakak is tells me why unum select him, and also he say to craft the warframe as soon possible to end onum mind connection with nakak. pls if someone gentle can help me to resolve this bug, because i want to craft revenant, but i can't if my quest is bugged.