server logs

[12:20:05] [Server thread/INFO]: grayez issued server command: /schem load "mysteryshak.schematic"
[12:20:05] [WorldEdit Task Executor - 0/ERROR]: Uncaught exception occurred in task: Loading schematic mysteryshak.schematic
java.util.zip.ZipException: Not in GZIP format
	at java.util.zip.GZIPInputStream.readHeader(GZIPInputStream.java:165) ~[?:1.8.0_212]
	at java.util.zip.GZIPInputStream.<init>(GZIPInputStream.java:79) ~[?:1.8.0_212]
	at java.util.zip.GZIPInputStream.<init>(GZIPInputStream.java:91) ~[?:1.8.0_212]
	at com.sk89q.worldedit.extent.clipboard.io.BuiltInClipboardFormat$2.getReader(BuiltInClipboardFormat.java:94) ~[?:?]
	at com.sk89q.worldedit.command.SchematicCommands$SchematicLoadTask.call(SchematicCommands.java:360) ~[?:?]
	at com.sk89q.worldedit.command.SchematicCommands$SchematicLoadTask.call(SchematicCommands.java:344) ~[?:?]
	at com.sk89q.worldedit.command.util.AsyncCommandBuilder.runTask(AsyncCommandBuilder.java:158) ~[?:?]
	at com.google.common.util.concurrent.TrustedListenableFutureTask$TrustedFutureInterruptibleTask.runInterruptibly(TrustedListenableFutureTask.java:111) ~[server.jar:git-Paper-"b89788a"]
	at com.google.common.util.concurrent.InterruptibleTask.run(InterruptibleTask.java:58) ~[server.jar:git-Paper-"b89788a"]
	at com.google.common.util.concurrent.TrustedListenableFutureTask.run(TrustedListenableFutureTask.java:75) ~[server.jar:git-Paper-"b89788a"]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_212]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_212]
	at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]