HTTP 400 Error

If you're encountering a HTTP 400 error, HavenBags is unable to connect to Mojang's servers, and therefore cannot obtain UUID data regarding players.
(Such as getting the player's username from the UUID)

This can be caused if you're located in a region blocked by Mojang, or other server settings making the server unable to connect to Mojang.
(Illegitimate/Cracked accounts do not work, as they do not exist in Mojang's database.)

HavenBags versions 1.5.2.377 or lower still work, as they do not use UUIDs to store data.
You can find older builds of the plugin here: https://github.com/Valorless/HavenBags/tree/main/builds