Error when a player tries to login in a server about bungeeguard HOT 9 CLOSED

You are using an old build of the plugin. This version contained some bugs, so it's reverted. Please download the newest build at his jenkins

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I have installed it, will it work on both paper and normal spigot 1.8.x?

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No. Bungee Guard never worked and still doesn't work for Spigot or Paperspigot 1.8.8 because of a missing event.

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Now I got this message on start up, will it work?

[BungeeGuard] Enabling BungeeGuard v1.0-SNAPSHOT

[22:06:56 INFO]: [BungeeGuard] Using Paper PlayerHandshakeEvent
[22:06:56 ERROR]: [BungeeGuard] Plugin BungeeGuard v1.0-SNAPSHOT has failed to register events for class me.lucko.bungeeguard.backend.BungeeGuardBackendPlugin because com/destroystokyo/paper/event/player/PlayerHandshakeEvent does not exist.

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Which Paperspigot version are you running? (/version)

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ElapsedSpigot which is based on PaperSpigot

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Also I tried on my other server which has git-PaperSpigot-"4c7641d" (MC: 1.8.8) and I got the same message

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Hello?

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As I already said, BungeeGuard doesn't support 1.8.8

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