Questline was removed during the "kama questline revamp" as I've read in Discord. You can still follow this user's guide to find where to obtain the knowledge for the adventure log. You still need to be on a character who is done with the kama questline and I think you need to obtain these knowledges in order. Also, they cost 10-30 energy each. You don't need them all if you just want the energy capacity.
For those looking for the quest. Seems i could not do it at this time. But note you can get all the knowledge in this questline by getting them all in order. Otherwise, it won't show up.