What behaviour is expected:
As the old days, setting a SkullMeta with a not premium player doesn't throw any error about not able to communicate to the mojang.
It should just set a Steave head as default without throwing any error or warning.
What behaviour is observed:
It throws a lot of errors, doesn't show heads at all and with each update it's worse

(Inventory should be full with heads of players)
https://pastebin.com/z5mDwXBm
Steps/models to reproduce:
Just set SkullMeta.setOwner() with any random, not premium player, name.
Plugin list:
[21:07:56 INFO]: Plugins (37): AdminSystem, AsVaidasAPI, AutoRestart, BungeeGuard, ChestSort, Events, ExploitFixer, FactionWars, GroupManager, GSit, HamsterAPI*, IllegalStack, mcMMO, MyCommand, Packages, PlaceholderAPI, PlugMan*, ProtocolLib, RanksTime, TAB, TPSmeter, TryMe, WorldFiller, ZC-lock, ZCBans, ZCClan, ZCCrates, ZCDeop, ZCIdea, ZCMainCore, ZCMarket, ZCMessages, ZCMobOptimizer, ZCPlayerLimit, ZCTops, ZCTrade, ZCUpdates
Paper build number:
[21:08:09 INFO]: This server is running Paper version git-Paper-371 (MC: 1.15.2) (Implementing API version 1.15.2-R0.1-SNAPSHOT)
[21:08:09 INFO]: Previous version: git-Paper-365 (MC: 1.15.2)
[21:08:09 INFO]: You are running the latest version
What behaviour is expected:
As the old days, setting a SkullMeta with a not premium player doesn't throw any error about not able to communicate to the mojang.
It should just set a Steave head as default without throwing any error or warning.
What behaviour is observed:
It throws a lot of errors, doesn't show heads at all and with each update it's worse

(Inventory should be full with heads of players)
https://pastebin.com/z5mDwXBm
Steps/models to reproduce:
Just set SkullMeta.setOwner() with any random, not premium player, name.
Plugin list:
[21:07:56 INFO]: Plugins (37): AdminSystem, AsVaidasAPI, AutoRestart, BungeeGuard, ChestSort, Events, ExploitFixer, FactionWars, GroupManager, GSit, HamsterAPI*, IllegalStack, mcMMO, MyCommand, Packages, PlaceholderAPI, PlugMan*, ProtocolLib, RanksTime, TAB, TPSmeter, TryMe, WorldFiller, ZC-lock, ZCBans, ZCClan, ZCCrates, ZCDeop, ZCIdea, ZCMainCore, ZCMarket, ZCMessages, ZCMobOptimizer, ZCPlayerLimit, ZCTops, ZCTrade, ZCUpdates
Paper build number:
[21:08:09 INFO]: This server is running Paper version git-Paper-371 (MC: 1.15.2) (Implementing API version 1.15.2-R0.1-SNAPSHOT)
[21:08:09 INFO]: Previous version: git-Paper-365 (MC: 1.15.2)
[21:08:09 INFO]: You are running the latest version