• [23:02:30 警告]: [WESV] Task #45 for WorldEditSelectionVisualizer v1.6.6 generated an exception
• java.lang.NoSuchMethodError: com.sk89q.worldedit.WorldEdit.getSessionManager()Lcom/sk89q/worldedit/session/SessionManager;
• at com.rojel.wesv.WorldEditHelper.getSelectedRegion(WorldEditHelper.java:73) ~[?:?]
• at com.rojel.wesv.WorldEditHelper.run(WorldEditHelper.java:56) ~[?:?]
• at org.bukkit.craftbukkit.v1_7_R4.scheduler.CraftTask.run(CraftTask.java:71) ~[CraftTask.class:1.7.10-R0.1-SNAPSHOT]
• at org.bukkit.craftbukkit.v1_7_R4.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:346) [CraftScheduler.class:1.7.10-R0.1-SNAPSHOT]
• at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:870) [MinecraftServer.class:?]
• at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:459) [lt.class:?]
• at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:806) [MinecraftServer.class:?]
• at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:665) [MinecraftServer.class:?]
• at java.lang.Thread.run(Thread.java:748) [?:1.8.0_192]
  

we没有com.sk89q.worldedit.WorldEdit.getSessionManager()Lcom/sk89q/worldedit/session/SessionManager;
方法
确认下we版本和服务端版本
尝试更新

com.sk89q.worldedit.WorldEdit.getSessionManager()Lcom/sk89q/worldedit/session/SessionManager;是什么？
we是啥插件？