[13:41:37 WARN]: java.lang.IllegalArgumentException: Role in rolesToRemove may not be null
[13:41:37 WARN]:        at jdalib.jda.core.utils.Checks.notNull(Checks.java:56)
[13:41:37 WARN]:        at jdalib.jda.core.managers.GuildController.lambda$modifyMemberRoles$1(GuildController.java:1483)
[13:41:37 WARN]:        at java.util.ArrayList.forEach(Unknown Source)
[13:41:37 WARN]:        at jdalib.jda.core.managers.GuildController.modifyMemberRoles(GuildController.java:1481)
[13:41:37 WARN]:        at br.net.fabiozumbi12.UltimateChat.Bukkit.discord.UCDiscord.setPlayerRole(UCDiscord.java:427)
[13:41:37 WARN]:        at br.net.fabiozumbi12.UltimateChat.Bukkit.discord.UCDiscordSync.lambda$null$1(UCDiscordSync.java:103)
[13:41:37 WARN]:        at org.bukkit.craftbukkit.v1_13_R2.scheduler.CraftTask.run(CraftTask.java:81)
[13:41:37 WARN]:        at org.bukkit.craftbukkit.v1_13_R2.scheduler.CraftAsyncTask.run(CraftAsyncTask.java:52)
[13:41:37 WARN]:        at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
[13:41:37 WARN]:        at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
[13:41:37 WARN]:        at java.lang.Thread.run(Unknown Source)
[13:42:38 WARN]: java.lang.IllegalArgumentException: Role in rolesToRemove may not be null
[13:42:38 WARN]:        at jdalib.jda.core.utils.Checks.notNull(Checks.java:56)
[13:42:38 WARN]:        at jdalib.jda.core.managers.GuildController.lambda$modifyMemberRoles$1(GuildController.java:1483)
[13:42:38 WARN]:        at java.util.ArrayList.forEach(Unknown Source)
[13:42:38 WARN]:        at jdalib.jda.core.managers.GuildController.modifyMemberRoles(GuildController.java:1481)
[13:42:38 WARN]:        at br.net.fabiozumbi12.UltimateChat.Bukkit.discord.UCDiscord.setPlayerRole(UCDiscord.java:427)
[13:42:38 WARN]:        at br.net.fabiozumbi12.UltimateChat.Bukkit.discord.UCDiscordSync.lambda$null$1(UCDiscordSync.java:103)
[13:42:38 WARN]:        at org.bukkit.craftbukkit.v1_13_R2.scheduler.CraftTask.run(CraftTask.java:81)
[13:42:38 WARN]:        at org.bukkit.craftbukkit.v1_13_R2.scheduler.CraftAsyncTask.run(CraftAsyncTask.java:52)
[13:42:38 WARN]:        at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
[13:42:38 WARN]:        at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
[13:42:38 WARN]:        at java.lang.Thread.run(Unknown Source)