suport at quest "Surce of pollution"

parts*
-Talk with geolus ✓
-find Lepios, the missing investigator ✓
- bring the contaminated water sample to Geolus ✓
-Borrow the "Guide to rare poison" from Dimos ✓
-Bring the contaminated water sample to jumentis ✓
-Meet quintus and find out the cause of the contamination ✓
-Go to Hygea and recive yustiel's tear ✓
-Talk with geolus ✓
-Defeat poisonus Bubblegut ✓
-Talk with kato's spirit
(After kill Bubblegut I locate the next step from the quest and showed brigade from verteron.. but my friend said it was wrong i had to talk with one npc in the place nearby Bubblegut but i didn't know it.. so i just teleport for vert city.. now i can't find Kato's spirit...)
What i have to do?

 

Kill bubblegut again?

 

Yes i did killed Bubble again... but the npc didn't showed up...

 

contact an SAM, puddles or cami. They will have to spawn/delete/edit something with your campaign quest for you to be able to do that. btw have u tried relogging the character? Some quests reverse when needed to when you do that.

 

You need to get the Bubblegut out of the Water and the Kato's spirit will appear.

 

Or just wait for someone on the same quest step to come, kill bubblegut and spawn kato's spirit which will enable you to speak with him.