I recently started playing destiny 2 on pc and used the free boost to boost my character to lvl 30 and now im 553 power but im going for the sleeper and im stuck i am at the quest stage where i have to clear es and collect 15 nodes i done the es and now i cant collect the nodes because i need the key thing but to get that i need resonate stems but they wont drop i have done heroic pub event and lost sector and nothing pls help