Schematic error

[Ddarke]

I tried to use schematic but it writes "failed to load schematic,unknow error,please see console"  and in console it says this:

[22:37:30] [Server thread/INFO]: Darke69 issued server command: /schematic list

[22:37:37] [Server thread/INFO]: Darke69 issued server command: /schematic load stonefarm

[22:37:37] [WorldEdit Task Executor - 7/ERROR]: Uncaught exception occurred in task: Loading schematic stonefarm

java.util.NoSuchElementException: No tag under the name 'Schematic' exists

at org.enginehub.linbus.tree.LinCompoundTag.getTag(LinCompoundTag.java:380) ~[?:?]

at com.sk89q.worldedit.extent.clipboard.io.sponge.SpongeSchematicV3Reader.getBaseTag(SpongeSchematicV3Reader.java:92) ~[?:?]

at com.sk89q.worldedit.extent.clipboard.io.sponge.SpongeSchematicV3Reader.read(SpongeSchematicV3Reader.java:61) ~[?:?]

at com.sk89q.worldedit.command.SchematicCommands$SchematicLoadTask.call(SchematicCommands.java:356) ~[?:?]

at com.sk89q.worldedit.command.SchematicCommands$SchematicLoadTask.call(SchematicCommands.java:338) ~[?:?]

at com.sk89q.worldedit.command.util.AsyncCommandBuilder.runTask(AsyncCommandBuilder.java:158) ~[?:?]

at com.google.common.util.concurrent.TrustedListenableFutureTask$TrustedFutureInterruptibleTask.runInterruptibly(TrustedListenableFutureTask.java:131) ~[guava-31.1-jre.jar:?]

at com.google.common.util.concurrent.InterruptibleTask.run(InterruptibleTask.java:74) ~[guava-31.1-jre.jar:?]

at com.google.common.util.concurrent.TrustedListenableFutureTask.run(TrustedListenableFutureTask.java:82) ~[guava-31.1-jre.jar:?]

at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136) ~[?:?]

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) ~[?:?]

at java.lang.Thread.run(Thread.java:840) ~[?:?]