Trying to do the Drifter Quest line. I've chosen Vanguard. I've found 6 of 7 tapes. I didn't do them in any particular order. The last tape (7th) I need should be in the Flooded Chasm, but it just doesn't show up. I've done that lost sector a bunch of times, entering from either side, and both solo and with a fireteam. No joy. What do I need to do?
Try deleting quest, then reclaim it, then go back to all 7 locations. Make sure to fully listen to each tape before moving to next one. If it still doesn’t work, get a video of your run & post it on here. It may help indicate the problem.