Here is the log when start the server.
13:00:22] [System:admin Activity] : Starting the application.
[13:00:22] [Minecraft:admin Info] : Java located at C:\Program Files (x86)\Common Files\Oracle\Java\javapath\java.exe
[13:00:22] [Minecraft:admin Warning] : Java installation may be 32-bit! This could prevent the Minecraft server from starting.
[13:00:23] [Minecraft:admin Info] : Using 'Official' compatibility mode.
[13:00:30] [main/WARN]: Ambiguity between arguments [teleport, destination]: and [teleport, targets] with inputs: [Player, 0123, @e, dd12be42-52a9-4a91-a8a1-11c01849e498]
[13:00:30] [main/WARN]: Ambiguity between arguments [teleport, location]: and [teleport, destination] with inputs: [0.1 -0.5 .9, 0 0 0]
[13:00:30] [main/WARN]: Ambiguity between arguments [teleport, location]: and [teleport, targets] with inputs: [0.1 -0.5 .9, 0 0 0]
[13:00:30] [main/WARN]: Ambiguity between arguments [teleport, targets]: and [teleport, destination] with inputs: [Player, 0123, dd12be42-52a9-4a91-a8a1-11c01849e498]
[13:00:30] [main/WARN]: Ambiguity between arguments [teleport, targets, location]: and [teleport, targets, destination] with inputs: [0.1 -0.5 .9, 0 0 0]
[13:00:30] [Server thread/INFO]: Starting minecraft server version 1.15.2
[13:00:30] [Server thread/INFO]: Loading properties
[13:00:30] [Server thread/INFO]: Default game type: SURVIVAL
[13:00:30] [Server thread/INFO]: Generating keypair
[13:00:31] [Server thread/INFO]: Starting Minecraft server on *:25566
[13:00:31] [Server thread/INFO]: Using default channel type
[13:00:31] [Server thread/INFO]: Preparing level "world"
[13:00:31] [Server thread/INFO]: Reloading ResourceManager: Default
[13:00:32] [Server thread/INFO]: Loaded 6 recipes
[13:00:33] [Server thread/INFO]: Loaded 825 advancements
[13:00:33] [Server thread/INFO]: Preparing start region for dimension minecraft:overworld
[13:00:42] [Server thread/INFO]: Time elapsed: 8492 ms
[13:00:42] [Server thread/INFO]: Done (10.723s)! For help, type "help"