
Originally Posted by
Bright-Flower
If you're referring to the void, we don't know that it's 'not possible' to fix. Afterall the Empty is being fixed on the First.
In fact, the questline you can unlock after doing all four Shadowbringers role quests and the Warring Triad fights from back in Heavensward...
...strongly suggests the Void can be fixed. Beq Lugg is working with Cylva and Unukalhai on that very project at the end of that quest chain, even though you're told that it could take an incredibly long time to see results.