Error when starting server

Hi, I was trying to reload my server but when i reload it. it kept giving me an error so i stopped the server and tried opening it again, now when i tried to open it again, it gave me some error in console and it stopped the server. Here’s the error

[11:06:02 ERROR]: Encountered an unexpected exception
java.lang.NullPointerException: null
at net.minecraft.server.v1_16_R3.JsonList.load( ~[patched_1.16.4.jar:git-Paper-367]
at net.minecraft.server.v1_16_R3.DedicatedPlayerList.y(SourceFile:95) ~[patched_1.16.4.jar:git-Paper-367]
at net.minecraft.server.v1_16_R3.DedicatedPlayerList.(SourceFile:22) ~[patched_1.16.4.jar:git-Paper-367]
at net.minecraft.server.v1_16_R3.DedicatedServer.init( ~[patched_1.16.4.jar:git-Paper-367]
at net.minecraft.server.v1_16_R3.MinecraftServer.w( ~[patched_1.16.4.jar:git-Paper-367] at net.minecraft.server.v1_16_R3.MinecraftServer.lambda$a$0( ~[patched_1.16.4.jar:git-Paper-367]
at [?:?]

[11:06:02 ERROR]: This crash report has been saved to: C:\Users\trick\Desktop\LolSMP.\crash-reports\crash-2021-01-03_11.06.02-server.txt

Please help

Look at the top of your error - it mentions JsonList.load so it failed to load one of your json config files because it wasn’t valid somehow. You’d probably need to take a closer look at your files to see which one is broken. This is usually whitelist.json or ops.json, but could be any other json file.

Try running them through online json validator first.If it’ll be all good, check that it isn’t missing some data (I.e. Entry has UUID, but not player name or the other way round).

thank you so much. ill do what u said