Using as a drop in web server for Dynmap 3.9 Paper 26.1.2 does not seem to work

[Tsoccerguy3]

Using your instructions for a drop in web server in Dynmap 26.1.2 unloads Dynmap 3.9 with this error . Is this not support 26.1.2 ?

[00:36:30 INFO]: [dynmap] version=26.1.2-74-e4e17fc (MC: 26.1.2)
[00:36:30 ERROR]: [dynmap] Cannot find [Lnet.minecraft.server.BiomeBase;
[00:36:30 ERROR]: [dynmap] Cannot find net.minecraft.server.BiomeStorage
[00:36:30 ERROR]: [dynmap] Unable to find method getHandle for org.bukkit.craftbukkit.CraftChunk
[00:36:30 ERROR]: [dynmap] Unable to find method getProperties for com.mojang.authlib.GameProfile
[00:36:30 ERROR]: [dynmap] Unable to find method getValue for com.mojang.authlib.properties.Property
[00:36:30 ERROR]: [dynmap] Error loading org.dynmap.bukkit.helper.BukkitVersionHelperCB
java.lang.reflect.InvocationTargetException
at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:74) ~[?:?]
at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) ~[?:?]
at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) ~[?:?]
at Dynmap-3.9-SNAPSHOT-spigot.jar//org.dynmap.bukkit.Helper.loadVersionHelper(Helper.java:15) ~[?:?]
at Dynmap-3.9-SNAPSHOT-spigot.jar//org.dynmap.bukkit.Helper.getHelper(Helper.java:124) ~[?:?]
at Dynmap-3.9-SNAPSHOT-spigot.jar//org.dynmap.bukkit.DynmapPlugin.onLoad(DynmapPlugin.java:900) ~[?:?]
at io.papermc.paper.plugin.storage.ServerPluginProviderStorage.processProvided(ServerPluginProviderStorage.java:59) ~[paper-26.1.2.jar:26.1.2-74-e4e17fc]
at io.papermc.paper.plugin.storage.ServerPluginProviderStorage.processProvided(ServerPluginProviderStorage.java:18) ~[paper-26.1.2.jar:26.1.2-74-e4e17fc]
at io.papermc.paper.plugin.storage.SimpleProviderStorage.enter(SimpleProviderStorage.java:39) ~[paper-26.1.2.jar:26.1.2-74-e4e17fc]
at io.papermc.paper.plugin.entrypoint.LaunchEntryPointHandler.enter(LaunchEntryPointHandler.java:39) ~[paper-26.1.2.jar:26.1.2-74-e4e17fc]
at org.bukkit.craftbukkit.CraftServer.loadPlugins(CraftServer.java:553) ~[paper-26.1.2.jar:26.1.2-74-e4e17fc]
at net.minecraft.server.dedicated.DedicatedServer.initServer(DedicatedServer.java:336) ~[paper-26.1.2.jar:26.1.2-74-e4e17fc]
at net.minecraft.server.MinecraftServer.runServer(MinecraftServer.java:1292) ~[paper-26.1.2.jar:26.1.2-74-e4e17fc]
at net.minecraft.server.MinecraftServer.lambda$spin$0(MinecraftServer.java:304) ~[paper-26.1.2.jar:26.1.2-74-e4e17fc]
at java.base/java.lang.Thread.run(Thread.java:1474) ~[?:?]
Caused by: java.lang.IllegalArgumentException: Error initializing dynmap - bukkit version incompatible!
at Dynmap-3.9-SNAPSHOT-spigot.jar//org.dynmap.bukkit.helper.BukkitVersionHelperGeneric.(BukkitVersionHelperGeneric.java:166) ~[?:?]
at Dynmap-3.9-SNAPSHOT-spigot.jar//org.dynmap.bukkit.helper.BukkitVersionHelperCB.(BukkitVersionHelperCB.java:43) ~[?:?]
at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) ~[?:?]
... 14 more
[00:36:30 INFO]: [dynmap] Mod Support API available

using this dynmap PR for 26.1.2 , which is working with Paper 26.x
webbukkit/dynmap#4262 (comment)