Unexpected login result

[untuned]

Here's the server log for a player. Server version is 1.13.2, running Paper build 637.

[01:52:18 INFO]: UUID of player CloudMek is 3a031005-3e20-4e58-9946-1ded028972a6
[01:52:18 INFO]: [AntiVPN] {m.e.a.e.PlayerLoginCheckHandler} [Anti-VPN] CloudMek passed VPN check.
[01:52:18 WARN]: [SimpleQueue]: A player logged in but had an unexpected login result. Please report this if you this is an error.
[01:52:18 INFO]: Disconnecting protocolsupport.protocol.utils.authlib.GameProfile(onlineMode: true, originalname: CloudMek, originaluuid: 3a031005-3e20-4e58-9946-1ded028972a6, name: CloudMek, uuid: 3a031005-3e20-4e58-9946-1ded028972a6, properties: {textures=[protocolsupport.api.utils.ProfileProperty(name: textures, value: eyJ0aW1lc3RhbXAiOjE1NjI3Mzc5Mzg1MzIsInByb2ZpbGVJZCI6IjNhMDMxMDA1M2UyMDRlNTg5OTQ2MWRlZDAyODk3MmE2IiwicHJvZmlsZU5hbWUiOiJDbG91ZE1layIsInRleHR1cmVzIjp7IlNLSU4iOnsidXJsIjoiaHR0cDovL3RleHR1cmVzLm1pbmVjcmFmdC5uZXQvdGV4dHVyZS85YzRjZWIyMTUyYjJjZTY4NjMzMGUyMTcwMzQ3NmMxYWUyOGY2NjdmZDJmMzgxN2U1NTQ0MTVjZmFhZWNiNzI3In19fQ==, signature: 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)]}) (/119.76.145.121:54130): You are not whitelisted on this server!
[01:52:18 INFO]: protocolsupport.protocol.utils.authlib.GameProfile(onlineMode: true, originalname: CloudMek, originaluuid: 3a031005-3e20-4e58-9946-1ded028972a6, name: CloudMek, uuid: 3a031005-3e20-4e58-9946-1ded028972a6, properties: {textures=[protocolsupport.api.utils.ProfileProperty(name: textures, value: eyJ0aW1lc3RhbXAiOjE1NjI3Mzc5Mzg1MzIsInByb2ZpbGVJZCI6IjNhMDMxMDA1M2UyMDRlNTg5OTQ2MWRlZDAyODk3MmE2IiwicHJvZmlsZU5hbWUiOiJDbG91ZE1layIsInRleHR1cmVzIjp7IlNLSU4iOnsidXJsIjoiaHR0cDovL3RleHR1cmVzLm1pbmVjcmFmdC5uZXQvdGV4dHVyZS85YzRjZWIyMTUyYjJjZTY4NjMzMGUyMTcwMzQ3NmMxYWUyOGY2NjdmZDJmMzgxN2U1NTQ0MTVjZmFhZWNiNzI3In19fQ==, signature: 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)]}) (/119.76.145.121:54130) lost connection: You are not whitelisted on this server!