• PacketEvents.getAPI().getPlayerUtilities().getPlayerPing(player); deprecated, use getPing(player);

• ServerTickEvent deprecated and it's Bukkit task too, will be removed in the next VersionLookupUtils

• PacketEvents.getAPI().getSettings().setDefaultServerVersion(version); added
Settings the default version will let PacketEvents use the default version if PacketEvents fails to detect your server version.
No idea why this happens in a spigot fork by the name of mSpigot, but yea.