(bug) Crash on empty DIM-1, DIM1 folders

[Alvinn8]

Processing dimension minecraft:the_nether
Failed to commit.
net.schmizz.sshj.sftp.SFTPException: failure
	at net.schmizz.sshj.sftp.Response.error(Response.java:140)
	at net.schmizz.sshj.sftp.Response.ensurePacketTypeIs(Response.java:117)
	at net.schmizz.sshj.sftp.SFTPEngine.openDir(SFTPEngine.java:171)
	at net.schmizz.sshj.sftp.SFTPClient.ls(SFTPClient.java:65)
	at ca.bkaw.mch.world.sftp.SftpWorldProvider.getRegionFiles(SftpWorldProvider.java:69)
	at ca.bkaw.mch.operation.CommitOperation.run(CommitOperation.java:87)
	at ca.bkaw.mch.cli.CommitCommand.run(CommitCommand.java:25)
	at picocli.CommandLine.executeUserObject(CommandLine.java:2026)
	at picocli.CommandLine.access$1500(CommandLine.java:148)
	at picocli.CommandLine$RunLast.executeUserObjectOfLastSubcommandWithSameParent(CommandLine.java:2461)
	at picocli.CommandLine$RunLast.handle(CommandLine.java:2453)
	at picocli.CommandLine$RunLast.handle(CommandLine.java:2415)
	at picocli.CommandLine$AbstractParseResultHandler.execute(CommandLine.java:2273)
	at picocli.CommandLine$RunLast.execute(CommandLine.java:2417)
	at picocli.CommandLine.execute(CommandLine.java:2170)
	at ca.bkaw.mch.cli.MchCli.main(MchCli.java:23)

This world has no nether or end regions, yet has the DIM1 and DIM-1 folders. So the region folders inside those folders are empty.