Exception in thread "main" picocli.CommandLine$ExecutionException: Error while calling command (net.brinkervii.rockit.zipline.cli.CLIServe@63475ace): java.nio.file.AccessDeniedException: C:\Users\kiera\AppData\Local\Application Data
        at picocli.CommandLine.executeUserObject(CommandLine.java:1710)
        at picocli.CommandLine.access$900(CommandLine.java:146)
        at picocli.CommandLine$RunLast.handle(CommandLine.java:2059)
        at picocli.CommandLine$RunLast.handle(CommandLine.java:2026)
        at picocli.CommandLine$AbstractParseResultHandler.handleParseResult(CommandLine.java:1886)
        at picocli.CommandLine.parseWithHandlers(CommandLine.java:2240)
        at picocli.CommandLine.run(CommandLine.java:2698)
        at picocli.CommandLine.run(CommandLine.java:2635)
        at net.brinkervii.Zipline.main(Zipline.java:16)
Caused by: java.nio.file.AccessDeniedException: C:\Users\kiera\AppData\Local\Application Data
        at java.base/sun.nio.fs.WindowsException.translateToIOException(WindowsException.java:89)
        at java.base/sun.nio.fs.WindowsException.rethrowAsIOException(WindowsException.java:103)
        at java.base/sun.nio.fs.WindowsException.rethrowAsIOException(WindowsException.java:108)
        at java.base/sun.nio.fs.WindowsDirectoryStream.<init>(WindowsDirectoryStream.java:86)
        at java.base/sun.nio.fs.WindowsFileSystemProvider.newDirectoryStream(WindowsFileSystemProvider.java:520)
        at java.base/java.nio.file.Files.newDirectoryStream(Files.java:475)
        at java.base/java.nio.file.FileTreeWalker.visit(FileTreeWalker.java:300)
        at java.base/java.nio.file.FileTreeWalker.next(FileTreeWalker.java:373)
        at java.base/java.nio.file.Files.walkFileTree(Files.java:2839)
        at java.base/java.nio.file.Files.walkFileTree(Files.java:2875)
        at net.brinkervii.rockit.zipline.FilewatcherService.getAllFiles(FilewatcherService.java:52)
        at net.brinkervii.rockit.zipline.FilewatcherService.start(FilewatcherService.java:22)
        at net.brinkervii.rockit.zipline.web.ZiplineServer.start(ZiplineServer.java:28)
        at net.brinkervii.rockit.zipline.cli.CLIServe.call(CLIServe.java:35)
        at net.brinkervii.rockit.zipline.cli.CLIServe.call(CLIServe.java:11)
        at picocli.CommandLine.executeUserObject(CommandLine.java:1701)
        ... 8 more
java.lang.NullPointerException
        at net.brinkervii.rockit.zipline.FilewatcherService.stop(FilewatcherService.java:64)
        at net.brinkervii.rockit.zipline.web.ZiplineServer.stop(ZiplineServer.java:34)
        at net.brinkervii.rockit.zipline.cli.CLIServe.shutdown(CLIServe.java:43)
        at java.base/java.lang.Thread.run(Thread.java:830)