Bug Report

Type /ver NametagEdit and post the output.
4.2.0

What version of Bukkit/Spigot/PaperSpigot are you using? Type /ver
spigot 1.13
nte with mysql support
client 1.13.2

What plugins are you using? Type /plugins
pex, plotsquared,worldedit, worldguard, viaversion, vault,pac,protocollib, essentials

Please explain your issue. How do you trigger it?
hm the nte is not working, on all other 1.12.2 servers is this ok but not on 1.13

Are there any errors in the console? Please use: https://pastebin.com

[00:54:07] [Client thread/FATAL]: Error executing task
[B#397] java.util.concurrent.ExecutionException: java.lang.IllegalArgumentException: A team with the name '' already exists!
[B#397] at java.util.concurrent.FutureTask.report(FutureTask.java:122) ~[?:1.8.0_191]
[B#397] at java.util.concurrent.FutureTask.get(FutureTask.java:192) ~[?:1.8.0_191]
[B#397] at k.a(SourceFile:199) [minecraft.jar:?]
[B#397] at cfi.c(SourceFile:808) [minecraft.jar:?]
[B#397] at cfi.a(SourceFile:392) [minecraft.jar:?]
[B#397] at net.minecraft.client.main.Main.main(SourceFile:144) [minecraft.jar:?]
[B#397] Caused by: java.lang.IllegalArgumentException: A team with the name '' already exists!
[B#397] at cer.g(SourceFile:188) ~[minecraft.jar:?]
[B#397] at cqs.a(SourceFile:1767) ~[minecraft.jar:?]
[B#397] at lo.a(SourceFile:122) ~[minecraft.jar:?]
[B#397] at lo.a(SourceFile:16) ~[minecraft.jar:?]
[B#397] at ix.a(SourceFile:10) ~[minecraft.jar:?]
[B#397] at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) ~[?:1.8.0_191]
[B#397] at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[?:1.8.0_191]
[B#397] at k.a(SourceFile:198) ~[minecraft.jar:?]
[B#397] ... 3 more

[00:49:54] [Craft Scheduler Thread - 1/INFO]: [NametagEdit] [DEBUG] Applying GroupTag to Eeassy
[00:49:54] [Server thread/INFO]: [NametagEdit] [DEBUG] Created FakeTeam FFPFD_AA3. Size: 1
[00:49:54] [Server thread/INFO]: [NametagEdit] [DEBUG] Eeassy has been added to team FFPFD_AA3
[00:51:25] [Craft Scheduler Thread - 12/INFO]: [MysqlInventoryBridge] Saving online players data...
[00:51:25] [Craft Scheduler Thread - 12/INFO]: [MysqlInventoryBridge] Data save complete for 1 players.
[00:53:40] [User Authenticator #4/INFO]: UUID of player DosePlay is 4f4fd805-f2bd-3bdc-abd6-22b1dcddde53
[00:53:41] [Server thread/INFO]: DosePlay[localhost.localdomain/127.0.0.1:46916] logged in with entity id 41585 at ([cb1]-151.31248624776956, 66.0, 222.2526678405442)
[00:53:41] [Craft Scheduler Thread - 4/INFO]: [NametagEdit] [DEBUG] Applying GroupTag to DosePlay
[00:53:41] [Server thread/INFO]: [NametagEdit] [DEBUG] Created FakeTeam FFPFD_A4. Size: 2
[00:53:41] [Server thread/INFO]: [NametagEdit] [DEBUG] DosePlay has been added to team FFPFD_A4
[00:53:52] [Server thread/INFO]: DosePlay issued server command: /nte reload
[00:53:52] [Server thread/INFO]: [NametagEdit] [DEBUG] Applied tags to all online players.
[00:53:52] [Craft Scheduler Thread - 14/INFO]: [NametagEdit] [DEBUG] Applying GroupTag to Eeassy
[00:53:52] [Craft Scheduler Thread - 12/INFO]: [NametagEdit] [DEBUG] Applying GroupTag to DosePlay
[00:53:52] [Server thread/INFO]: [NametagEdit] [DEBUG] Created FakeTeam FFPFD_AA5. Size: 1
[00:53:52] [Server thread/INFO]: [NametagEdit] [DEBUG] Eeassy has been added to team FFPFD_AA5
[00:53:52] [Server thread/INFO]: [NametagEdit] [DEBUG] Created FakeTeam FFPFD_A6. Size: 2
[00:53:52] [Server thread/INFO]: [NametagEdit] [DEBUG] DosePlay has been added to team FFPFD_A6

Unfortunately, this error doesn't seem to connect to NametagEdit at all. While we do use scoreboards. I'm not seeing any errors that are indicating the issue is being on your end.

Hi i have also try to change from the mysql to file support, and its the same issue.
Hope you can help.

are there support here ? No ide ?

Hi hm ok i try this

hm is the same issue

i have also try to install a clean 1.13 server with nte but is not working , there are no name tags and the same issue

Seems that the problem is from another plugin, try removing PAC

Hi hm ok i try this

try deleting the scoreboard.dat file inside the main world folder

its the same also on 1.13.1 and 1.13.2, with the latest spigotbuild

Same issue for me but is estremly rare, using waterfall and paperspigot 1.12.2 (latest release)
bungee: https://gist.github.com/xion87/e980fc667f4cd3c5480b73fe4920e046
paperspigot (with debug enabled) https://gist.github.com/xion87/08409681d3f197bc65838296ee819221

and sometimes all tags will gone and work again after reload NTE again,