Problem/Bug server crashing pls help

i have no idea why my server is crashing and dont know what the code says/how to fix it
heres the entire code from the .bat launch

Code:

C:\Users\USER\Desktop\minecraft server>java -Xmx2048M -Xms2048M -jar server.jar nogui
[23:56:26] [main/INFO]: Environment: authHost='https://authserver.mojang.com', accountsHost='https://api.mojang.com', sessionHost='https://sessionserver.mojang.com', name='PROD'
[23:56:26] [main/WARN]: Ambiguity between arguments [teleport, destination] and [teleport, targets] with inputs: [Player, 0123, @e, dd12be42-52a9-4a91-a8a1-11c01849e498]
[23:56:26] [main/WARN]: Ambiguity between arguments [teleport, location] and [teleport, destination] with inputs: [0.1 -0.5 .9, 0 0 0]
[23:56:26] [main/WARN]: Ambiguity between arguments [teleport, location] and [teleport, targets] with inputs: [0.1 -0.5 .9, 0 0 0]
[23:56:26] [main/WARN]: Ambiguity between arguments [teleport, targets] and [teleport, destination] with inputs: [Player, 0123, dd12be42-52a9-4a91-a8a1-11c01849e498]
[23:56:26] [main/WARN]: Ambiguity between arguments [teleport, targets, location] and [teleport, targets, destination] with inputs: [0.1 -0.5 .9, 0 0 0]
[23:56:26] [main/INFO]: Reloading ResourceManager: Default
[23:56:27] [Worker-Main-12/INFO]: Loaded 7 recipes
[23:56:27] [Worker-Main-12/INFO]: Loaded 927 advancements
[23:56:28] [Server thread/INFO]: Starting minecraft server version 1.16.3
[23:56:28] [Server thread/INFO]: Loading properties
[23:56:28] [Server thread/INFO]: Default game type: SURVIVAL
[23:56:28] [Server thread/INFO]: Generating keypair
[23:56:28] [Server thread/INFO]: Starting Minecraft server on *:25565
[23:56:28] [Server thread/INFO]: Using default channel type
[23:56:28] [Server thread/ERROR]: Encountered an unexpected exception
com.google.gson.JsonSyntaxException: Expected a com.google.gson.JsonArray but was com.google.gson.JsonPrimitive
        at com.google.gson.internal.bind.TypeAdapters$35$1.read(TypeAdapters.java:913) ~[server.jar:?]
        at com.google.gson.Gson.fromJson(Gson.java:887) ~[server.jar:?]
        at com.google.gson.Gson.fromJson(Gson.java:825) ~[server.jar:?]
        at acw.f(SourceFile:118) ~[server.jar:?]
        at zf.y(SourceFile:95) ~[server.jar:?]
        at zf.<init>(SourceFile:22) ~[server.jar:?]
        at zg.d(SourceFile:164) ~[server.jar:?]
        at net.minecraft.server.MinecraftServer.w(SourceFile:642) ~[server.jar:?]
        at net.minecraft.server.MinecraftServer.a(SourceFile:254) ~[server.jar:?]
        at java.lang.Thread.run(Unknown Source) [?:1.8.0_261]
[23:56:28] [Server thread/ERROR]: This crash report has been saved to: C:\Users\V\Desktop\minecraft server\.\crash-reports\crash-2020-10-28_23.56.28-server.txt
[23:56:28] [Server thread/INFO]: Stopping server
[23:56:28] [Server thread/INFO]: Saving worlds
[23:56:28] [Server thread/ERROR]: Exception stopping the server
java.lang.NullPointerException: null
        at net.minecraft.server.MinecraftServer.a(SourceFile:569) ~[server.jar:?]
        at net.minecraft.server.MinecraftServer.t(SourceFile:596) ~[server.jar:?]
        at zg.t(SourceFile:558) ~[server.jar:?]
        at net.minecraft.server.MinecraftServer.w(SourceFile:704) ~[server.jar:?]
        at net.minecraft.server.MinecraftServer.a(SourceFile:254) ~[server.jar:?]
        at java.lang.Thread.run(Unknown Source) [?:1.8.0_261]

C:\Users\USER\Desktop\minecraft server>pause

thnx for the help in advance <3