Cannot run google app engine standard environment on a local machine with Google Cloud CLI version 569.0.0

[hqkhanh9600196]

[INFO] GCLOUD: May 20, 2026 11:09:18 AM com.google.appengine.init.AppEngineWebXmlInitialParse handleRuntimeProperties
[INFO] GCLOUD: INFO: AppEngine runtime configuration: runtimeId=java17, with Jetty 12, appengine.use.EE8=true
[INFO] GCLOUD: java.nio.file.InvalidPathException: Illegal char <:> at index 2: /D:/myproject/target/com.myproject-6.0.0/WEB-INF/
[INFO] GCLOUD: at java.base/sun.nio.fs.WindowsPathParser.normalize(WindowsPathParser.java:204)
[INFO] GCLOUD: at java.base/sun.nio.fs.WindowsPathParser.parse(WindowsPathParser.java:175)
[INFO] GCLOUD: at java.base/sun.nio.fs.WindowsPathParser.parse(WindowsPathParser.java:77)
[INFO] GCLOUD: at java.base/sun.nio.fs.WindowsPath.parse(WindowsPath.java:92)
[INFO] GCLOUD: at java.base/sun.nio.fs.WindowsFileSystem.getPath(WindowsFileSystem.java:231)
[INFO] GCLOUD: at java.base/java.nio.file.Path.resolve(Path.java:516)
[INFO] GCLOUD: at org.eclipse.jetty.util.resource.PathResource.resolveSchemeSpecificPath(PathResource.java:315)
[INFO] GCLOUD: at org.eclipse.jetty.util.resource.PathResource.resolve(PathResource.java:296)
[INFO] GCLOUD: at org.eclipse.jetty.ee8.webapp.WebAppContext.getWebInf(WebAppContext.java:799)
[INFO] GCLOUD: at com.google.appengine.tools.development.jetty.JettyContainerService.determineAppRoot(JettyContainerService.java:592)
[INFO] GCLOUD: at com.google.appengine.tools.development.jetty.JettyContainerService.initContext(JettyContainerService.java:212)
[INFO] GCLOUD: at com.google.appengine.tools.development.AbstractContainerService.startup(AbstractContainerService.java:280)
[INFO] GCLOUD: at com.google.appengine.tools.development.AutomaticInstanceHolder.startUp(AutomaticInstanceHolder.java:42)
[INFO] GCLOUD: at com.google.appengine.tools.development.AbstractModule.startup(AbstractModule.java:101)
[INFO] GCLOUD: at com.google.appengine.tools.development.Modules.startup(Modules.java:133)
[INFO] GCLOUD: at com.google.appengine.tools.development.DevAppServerImpl.doStart(DevAppServerImpl.java:275)
[INFO] GCLOUD: at com.google.appengine.tools.development.DevAppServerImpl.start(DevAppServerImpl.java:228)
[INFO] GCLOUD: at com.google.appengine.tools.development.DevAppServerMain$StartAction.apply(DevAppServerMain.java:383)
[INFO] GCLOUD: at com.google.appengine.tools.util.Parser$ParseResult.applyArgs(Parser.java:58)
[INFO] GCLOUD: at com.google.appengine.tools.development.DevAppServerMain.run(DevAppServerMain.java:239)
[INFO] GCLOUD: at com.google.appengine.tools.development.DevAppServerMain.main(DevAppServerMain.java:230)

it works ok with Google Cloud CLI version 566

[lachlan-roberts]

This is caused by issue jetty/jetty.project#15011 which is marked as fixed in 12.1.10 which will be released by the end of the month.

This bug affects users of Jetty 12.1.9 that run on Microsoft Windows, but does not affect any other OS.

[hqkhanh9600196]

Thanks.