According to The Swedish Tax Agency there are no civil laws regulating exactly how to form a non-profit organization. But it’s customary to create a ”decree” (stadgar) that declares such things as location (”säte“), purpose, rules for how to operate the organization, rules for how to elect the board of directors, etc. Not sure if they have done any of those things.
If the organization hasen’t created a decree and elected a board, then it will not count as juridical person.
[Edited slightly]
I wasn't able to find Libera Chat there, though it might simply be the case that the registration has not been finalized yet.