While this quest is tagged as Heroic, it is possible to solo. Some players may not get a quest update if grouped with others on the quest; consider soloing the quest ungrouped if you are able.
Objectives
"I need to travel to Nektulos Forest and look for the drop point Nyran described!"
Find a chest at ( -967, 1, -574 ) Copy/waypoint -966.97, 1.36, -573.69. Right-click it and break the lock. Right click the chest again and loot it.
You will be ambushed by 4 81-heroic Ebon Mask Ambushers when you break the lock. Kill them, followed by two more waves. Finally a ^^ named, Aastra L'Darlan will spawn. Kill her.
You can run off the bridge before they aggro you and pull from a distance. Each wave will wander close to the bridge and not auto aggro.
The last ^^ named is a bit of an undercon, it has a knock back that punts pretty far. There is however a tree on the east side of the bridge with enough girth to sit 'in' its roots and avoid the knock back with a little effort.