Hi, so I have been running a server for a while on version 1.15.2. I port forward it and it worked just fine. Recently I wanted to update my server to 1.16 but I was worried there where gonna be some issues so i thought it would be a good idea to update my server to version 20W12A so I can start troubleshooting. After I fixed some minor bugs everything started to seem normal again until I tried to run my server again. The command prompt came up and everything seemed normal at first glance but when I tried to join my server it was as if it was offline. Keep in mind I had not changed anything after i had closed my server. It's as if these issues just made themselves or something.

COMMAND PROMPT:

C:\Users\Owner\Desktop\MC SERVER 1.15.2 20w12a>java -Xmx2048M -Xms1024M -jar spigot.jar
[15:53:12] [main/ERROR]: Unable to bootstrap registry 'minecraft:chunk_generator_type'
[15:53:13] [main/ERROR]: Registry 'minecraft:chunk_generator_type' was empty after loading
[15:53:14] [main/WARN]: Ambiguity between arguments [teleport, destination] and [teleport, targets] with inputs: [Player, 0123, @e, dd12be42-52a9-4a91-a8a1-11c01849e498]
[15:53:14] [main/WARN]: Ambiguity between arguments [teleport, location] and [teleport, destination] with inputs: [0.1 -0.5 .9, 0 0 0]
[15:53:14] [main/WARN]: Ambiguity between arguments [teleport, location] and [teleport, targets] with inputs: [0.1 -0.5 .9, 0 0 0]
[15:53:14] [main/WARN]: Ambiguity between arguments [teleport, targets] and [teleport, destination] with inputs: [Player, 0123, dd12be42-52a9-4a91-a8a1-11c01849e498]
[15:53:14] [main/WARN]: Ambiguity between arguments [teleport, targets, location] and [teleport, targets, destination] with inputs: [0.1 -0.5 .9, 0 0 0]
[15:53:16] [Server thread/INFO]: Starting minecraft server version 20w12a
[15:53:16] [Server thread/INFO]: Loading properties
[15:53:16] [Server thread/INFO]: Default game type: SURVIVAL
[15:53:16] [Server thread/INFO]: Generating keypair
[15:53:16] [Server thread/INFO]: Starting Minecraft server on *:25565
[15:53:16] [Server thread/INFO]: Using default channel type
[15:53:17] [Server thread/INFO]: Preparing level "world"
[15:53:17] [Server thread/INFO]: Reloading ResourceManager: Default, bukkit, Essentials_Datapack, playerdata2
[15:53:17] [Server thread/INFO]: Loaded 6 recipes
[15:53:20] [Server thread/INFO]: Loaded 67 custom command functions
[15:53:20] [Server thread/INFO]: Loaded 860 advancements
[15:53:21] [Server thread/INFO]: Preparing start region for dimension minecraft:overworld
[15:53:22] [Server thread/INFO]: Preparing spawn area: 0%
[15:53:22] [Server thread/INFO]: Preparing spawn area: 0%
[15:53:22] [Server thread/INFO]: Preparing spawn area: 0%
[15:53:22] [Server thread/INFO]: Preparing spawn area: 0%
[15:53:25] [Worker-4/INFO]: Preparing spawn area: 0%
[15:53:25] [Worker-7/INFO]: Preparing spawn area: 0%
[15:53:25] [Worker-2/INFO]: Preparing spawn area: 0%
[15:53:25] [Worker-4/INFO]: Preparing spawn area: 0%
[15:53:25] [Worker-2/INFO]: Preparing spawn area: 0%
[15:53:25] [Worker-4/INFO]: Preparing spawn area: 0%
[15:53:26] [Server thread/INFO]: Preparing spawn area: 78%
[15:53:26] [Server thread/INFO]: Time elapsed: 5127 ms
[15:53:26] [Server thread/INFO]: Done (9.397s)! For help, type "help"
[15:53:26] [Server thread/INFO]: Starting GS4 status listener
[15:53:26] Query Listener #1/INFO: Query running on 0.0.0.0:25565

Does anyone know if this is some kind of port forward issue or something or something wrong with my internet?