Error on 1.12.2 paper fork

[ayunami2000]

Checklist

• [x] I have searched the existing issues
• [ ] I ticked all the boxes without actually reading them
• [x] I am using latest dev build from https://github.com/Winds-Studio/Surf/releases

What behaviour is observed?

Server software used: https://github.com/ruViolence/Reaper

[15:16:04] [Server thread/WARN]: [Surf] Invalid material: REPEATING_COMMAND_BLOCK
[15:16:04] [Server thread/WARN]: [Surf] Invalid material: COMMAND_BLOCK_MINECART
[15:16:04] [Server thread/WARN]: [Surf] Invalid material: CHAIN_COMMAND_BLOCK
[15:16:04] [Server thread/WARN]: [Surf] Invalid material: COMMAND_BLOCK
[15:16:04] [Server thread/WARN]: [Surf] Invalid material: SPAWNER
[15:16:04] [Server thread/WARN]: [Surf] Invalid material: END_PORTAL
[15:16:04] [Server thread/WARN]: [Surf] Invalid material: END_PORTAL_FRAME
[15:16:04] [Server thread/WARN]: [Surf] Invalid material: NETHER_PORTAL
[15:16:04] [Server thread/WARN]: [Surf] Invalid material: JIGSAW
[15:16:04] [Server thread/WARN]: [Surf] Invalid material: LIGHT
[15:16:04] [Server thread/ERROR]: [Surf] Plugin Surf v3.4.1 has failed to register events for class org.surf.modules.patches.IllegalDamageAndPotionCheck because org/bukkit/event/entity/EntityPotionEffectEvent does not exist.
[15:16:04] [Server thread/ERROR]: Error occurred while enabling Surf v3.4.1 (Is it up to date?)
java.lang.NoSuchFieldError: Class org.bukkit.Material does not have member field 'org.bukkit.Material WRITABLE_BOOK'
        at org.surf.modules.patches.Offhand.<init>(Offhand.java:21) ~[?:?]
        at org.surf.Main.registerEvents(Main.java:92) ~[?:?]
        at org.surf.Main.onEnable(Main.java:64) ~[?:?]
        at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:264) ~[reaper.jar:git-Reaper-"1454595"]
        at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:311) ~[reaper.jar:git-Reaper-"1454595"]
        at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:403) ~[reaper.jar:git-Reaper-"1454595"]
        at org.bukkit.craftbukkit.v1_12_R1.CraftServer.enablePlugin(CraftServer.java:395) ~[reaper.jar:git-Reaper-"1454595"]
        at org.bukkit.craftbukkit.v1_12_R1.CraftServer.enablePlugins(CraftServer.java:344) ~[reaper.jar:git-Reaper-"1454595"]
        at net.minecraft.server.v1_12_R1.MinecraftServer.t(MinecraftServer.java:448) ~[reaper.jar:git-Reaper-"1454595"]
        at net.minecraft.server.v1_12_R1.MinecraftServer.l(MinecraftServer.java:409) ~[reaper.jar:git-Reaper-"1454595"]
        at net.minecraft.server.v1_12_R1.MinecraftServer.a(MinecraftServer.java:347) ~[reaper.jar:git-Reaper-"1454595"]
        at net.minecraft.server.v1_12_R1.DedicatedServer.init(DedicatedServer.java:292) ~[reaper.jar:git-Reaper-"1454595"]
        at net.minecraft.server.v1_12_R1.MinecraftServer.run(MinecraftServer.java:628) ~[reaper.jar:git-Reaper-"1454595"]
        at java.lang.Thread.run(Unknown Source) [?:?]

Expected behaviour

it works

To Reproduce

start server after just installing plugin

Spark profiler link

not relevant

Error log (if applicable)

No response

Surf configuration (if applicable)

default