Incomplete tag please help its been so long i read all the forums and nothing helped :(

[Real_Swat]

openjdk version "16.0.1" 2021-04-20
OpenJDK Runtime Environment (build 16.0.1+9-24)
OpenJDK 64-Bit Server VM (build 16.0.1+9-24, mixed mode, sharing)
:/home/container$ java -Xms128M -Xmx3072M -Dterminal.jline=false -Dterminal.ansi=true -jar server.jar.
[23:23:18] [main/INFO]: Environment: authHost='https://authserver.mojang.com', accountsHost='https://api.mojang.com', sessionHost='https://sessionserver.mojang.com', servicesHost='https://api.minecraftservices.com', name='PROD'
[23:23:19] [main/WARN]: Ambiguity between arguments [teleport, destination] and [teleport, targets] with inputs: [Player, 0123, @e, dd12be42-52a9-4a91-a8a1-11c01849e498]
[23:23:19] [main/WARN]: Ambiguity between arguments [teleport, location] and [teleport, destination] with inputs: [0.1 -0.5 .9, 0 0 0]
[23:23:19] [main/WARN]: Ambiguity between arguments [teleport, location] and [teleport, targets] with inputs: [0.1 -0.5 .9, 0 0 0]
[23:23:19] [main/WARN]: Ambiguity between arguments [teleport, targets] and [teleport, destination] with inputs: [Player, 0123, dd12be42-52a9-4a91-a8a1-11c01849e498]
[23:23:19] [main/WARN]: Ambiguity between arguments [teleport, targets, location] and [teleport, targets, destination] with inputs: [0.1 -0.5 .9, 0 0 0]
[23:23:19] [main/INFO]: Reloading ResourceManager: Default
[23:23:22] [Worker-Main-2/INFO]: Loaded 7 recipes
[23:23:22] [Worker-Main-2/INFO]: Loaded 927 advancements
[23:23:26] [Server thread/INFO]: Starting minecraft server version 1.16.5
[23:23:26] [Server thread/INFO]: Loading properties
[23:23:26] [Server thread/INFO]: Default game type: SURVIVAL
[23:23:26] [Server thread/INFO]: Generating keypair
[23:23:26] [Server thread/INFO]: Starting Minecraft server on 0.0.0.0:25568
[23:23:26] [Server thread/INFO]: Using epoll channel type
[23:23:27] [Server thread/WARN]: **** SERVER IS RUNNING IN OFFLINE/INSECURE MODE!
[23:23:27] [Server thread/WARN]: The server will make no attempt to authenticate usernames. Beware.
[23:23:27] [Server thread/WARN]: While this makes the game possible to play without internet access, it also opens up the ability for hackers to connect with any username they choose.
[23:23:27] [Server thread/WARN]: To change this, set "online-mode" to "true" in the server.properties file.
[23:23:27] [Server thread/INFO]: Preparing level "world"
[23:23:27] [Server thread/INFO]: Preparing start region for dimension minecraft:overworld
[23:23:30] [Server thread/INFO]: Preparing spawn area: 0%
[23:23:30] [Server thread/INFO]: Preparing spawn area: 0%
[23:23:30] [Server thread/INFO]: Preparing spawn area: 0%
[23:23:30] [Server thread/INFO]: Preparing spawn area: 0%
[23:23:30] [Server thread/INFO]: Preparing spawn area: 0%
[23:23:30] [Server thread/INFO]: Preparing spawn area: 0%
[23:23:30] [Server thread/INFO]: Preparing spawn area: 0%
[23:23:36] [Worker-Main-2/INFO]: Preparing spawn area: 0%
[23:23:36] [Worker-Main-2/INFO]: Preparing spawn area: 0%
[23:23:36] [Worker-Main-2/INFO]: Preparing spawn area: 0%
[23:23:36] [Worker-Main-2/INFO]: Preparing spawn area: 0%
[23:23:36] [Worker-Main-2/INFO]: Preparing spawn area: 0%
[23:23:36] [Worker-Main-2/INFO]: Preparing spawn area: 0%
[23:23:36] [Worker-Main-2/INFO]: Preparing spawn area: 0%
[23:23:36] [Worker-Main-2/INFO]: Preparing spawn area: 0%
[23:23:36] [Worker-Main-2/INFO]: Preparing spawn area: 0%
[23:23:36] [Worker-Main-2/INFO]: Preparing spawn area: 0%
[23:23:36] [Worker-Main-2/INFO]: Preparing spawn area: 0%
[23:23:36] [Worker-Main-2/INFO]: Preparing spawn area: 0%
[23:23:36] [Server thread/INFO]: Preparing spawn area: 2%
[23:23:37] [Worker-Main-2/INFO]: Preparing spawn area: 35%
[23:23:38] [Worker-Main-2/INFO]: Preparing spawn area: 70%
[23:23:38] [Worker-Main-2/INFO]: Preparing spawn area: 83%
[23:23:38] [Worker-Main-2/INFO]: Preparing spawn area: 83%
[23:23:39] [Worker-Main-2/INFO]: Preparing spawn area: 83%
[23:23:39] [Worker-Main-2/INFO]: Preparing spawn area: 83%
[23:23:40] [Worker-Main-2/INFO]: Preparing spawn area: 83%
[23:23:40] [Server thread/WARN]: Trying to add entity with duplicated UUID 3edb239c-733a-4b12-9a60-2ceb593eb7df. Existing minecraft:salmon#66, new: minecraft:salmon#92
[23:23:40] [Worker-Main-2/INFO]: Preparing spawn area: 83%
[23:23:41] [Worker-Main-2/INFO]: Preparing spawn area: 83%
[23:23:41] [Worker-Main-2/INFO]: Preparing spawn area: 83%
[23:23:42] [Worker-Main-2/INFO]: Preparing spawn area: 83%
[23:23:42] [Worker-Main-2/INFO]: Preparing spawn area: 83%
[23:23:43] [Worker-Main-2/INFO]: Preparing spawn area: 84%
[23:23:43] [Server thread/INFO]: Preparing spawn area: 86%
[23:23:44] [Worker-Main-2/INFO]: Preparing spawn area: 87%
[23:23:44] [Server thread/INFO]: Preparing spawn area: 88%
[23:23:45] [Worker-Main-2/INFO]: Preparing spawn area: 89%
[23:23:45] [Server thread/INFO]: Preparing spawn area: 90%
[23:23:46] [Server thread/INFO]: Preparing spawn area: 93%
[23:23:46] [Server thread/INFO]: Preparing spawn area: 94%
[23:23:47] [Server thread/INFO]: Preparing spawn area: 96%
[23:23:47] [Worker-Main-2/INFO]: Preparing spawn area: 97%
[23:23:48] [Server thread/INFO]: Preparing spawn area: 99%
[23:23:48] [Server thread/INFO]: Time elapsed: 21220 ms
[23:23:48] [Server thread/INFO]: Done (21.395s)! For help, type "help"

[Real_Swat]

2 hours ago, diesieben07 said:

That is a vanilla server log. I assume you are trying to connect to it with a modded client, which can produce the error you mentioned.

Omg thx so much when I went to look if it even load forge/fabric I found out it don't and now I fixed it