Error Message:

       java.lang.ClassCastException: class java.io.ObjectStreamClass$Caches$1 
cannot be cast to class java.util.Map (java.io.ObjectStreamClass$Caches$1 and 
java.util.Map are in module java.base of loader 'bootstrap')
                at 
org.apache.catalina.loader.WebappClassLoaderBase.clearCache(WebappClassLoaderBase.java:2269)
                at 
org.apache.catalina.loader.WebappClassLoaderBase.clearReferencesObjectStreamClassCaches(WebappClassLoaderBase.java:2256)
                at 
org.apache.catalina.loader.WebappClassLoaderBase.clearReferences(WebappClassLoaderBase.java:1627)
                at 
org.apache.catalina.loader.WebappClassLoaderBase.stop(WebappClassLoaderBase.java:1555)
                at 
org.apache.catalina.loader.WebappLoader.stopInternal(WebappLoader.java:443)
                at 
org.apache.catalina.util.LifecycleBase.stop(LifecycleBase.java:257)
                at 
org.apache.catalina.core.StandardContext.stopInternal(StandardContext.java:5432)
                at 
org.apache.catalina.util.LifecycleBase.stop(LifecycleBase.java:257)
                at 
org.apache.catalina.core.ContainerBase$StopChild.call(ContainerBase.java:1400)
                at 
org.apache.catalina.core.ContainerBase$StopChild.call(ContainerBase.java:1389)
                at 
java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
                at 
org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75)
                at 
java.base/java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:140)
                at 
org.apache.catalina.core.ContainerBase.stopInternal(ContainerBase.java:976)
                at 
org.apache.catalina.util.LifecycleBase.stop(LifecycleBase.java:257)
                at 
org.apache.catalina.core.ContainerBase$StopChild.call(ContainerBase.java:1400)
                at 
org.apache.catalina.core.ContainerBase$StopChild.call(ContainerBase.java:1389)
                at 
java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
                at 
org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75)
                at 
java.base/java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:140)
                at 
org.apache.catalina.core.ContainerBase.stopInternal(ContainerBase.java:976)
                at 
org.apache.catalina.util.LifecycleBase.stop(LifecycleBase.java:257)
                at 
org.apache.catalina.core.StandardService.stopInternal(StandardService.java:473)
                at 
org.apache.catalina.util.LifecycleBase.stop(LifecycleBase.java:257)
                at 
org.apache.catalina.core.StandardServer.stopInternal(StandardServer.java:992)
                at 
org.apache.catalina.util.LifecycleBase.stop(LifecycleBase.java:257)
                at org.apache.catalina.startup.Catalina.stop(Catalina.java:706)
                at 
org.apache.catalina.startup.Catalina$CatalinaShutdownHook.run(Catalina.java:803)
11-Dec-2023 08:49:05.848 INFO [Thread-3] 
org.apache.coyote.AbstractProtocol.stop Stopping ProtocolHandler 
["http-nio-8080"]
11-Dec-2023 08:49:05.860 INFO [Thread-3] 
org.apache.coyote.AbstractProtocol.destroy Destroying ProtocolHandler 
["http-nio-8080"]
11-Dec-2023 08:49:21.761 INFO [main] 
org.apache.catalina.startup.VersionLoggerListener.log Server version name:   
Apache Tomcat/9.0.31 (Ubuntu)
11-Dec-2023 08:49:21.761 INFO [main] 
org.apache.catalina.startup.VersionLoggerListener.log Server built:          
Nov 18 2022 19:07:15 UTC
11-Dec-2023 08:49:21.761 INFO [main] 
org.apache.catalina.startup.VersionLoggerListener.log Server version number: 
9.0.31.0
11-Dec-2023 08:49:21.761 INFO [main] 
org.apache.catalina.startup.VersionLoggerListener.log OS Name:               
Linux
11-Dec-2023 08:49:21.761 INFO [main] 
org.apache.catalina.startup.VersionLoggerListener.log OS Version:            
5.4.0-169-generic
11-Dec-2023 08:49:21.761 INFO [main] 
org.apache.catalina.startup.VersionLoggerListener.log Architecture:          
amd64
11-Dec-2023 08:49:21.761 INFO [main] 
org.apache.catalina.startup.VersionLoggerListener.log Java Home:             
/usr/lib/jvm/java-11-openjdk-amd64
11-Dec-2023 08:49:21.762 INFO [main] 
org.apache.catalina.startup.VersionLoggerListener.log JVM Version:           
11.0.21+9-post-Ubuntu-0ubuntu120.04
11-Dec-2023 08:49:21.762 INFO [main] 
org.apache.catalina.startup.VersionLoggerListener.log JVM Vendor:            
Ubuntu
11-Dec-2023 08:49:21.762 INFO [main] 
org.apache.catalina.startup.VersionLoggerListener.log CATALINA_BASE:         
/var/lib/tomcat9
11-Dec-2023 08:49:21.762 INFO [main] 
org.apache.catalina.startup.VersionLoggerListener.log CATALINA_HOME:         
/usr/share/tomcat9
11-Dec-2023 08:49:21.782 INFO [main] 
org.apache.catalina.startup.VersionLoggerListener.log Command line argument: 
--add-opens=java.base/java.lang=ALL-UNNAMED
11-Dec-2023 08:49:21.782 INFO [main] 
org.apache.catalina.startup.VersionLoggerListener.log Command line argument: 
--add-opens=java.base/java.io=ALL-UNNAMED
11-Dec-2023 08:49:21.782 INFO [main] 
org.apache.catalina.startup.VersionLoggerListener.log Command line argument: 
--add-opens=java.rmi/sun.rmi.transport=ALL-UNNAMED
11-Dec-2023 08:49:21.782 INFO [main] 
org.apache.catalina.startup.VersionLoggerListener.log Command line argument: 
-Djava.util.logging.config.file=/var/lib/tomcat9/conf/logging.properties
11-Dec-2023 08:49:21.782 INFO [main] 
org.apache.catalina.startup.VersionLoggerListener.log Command line argument: 
-Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager
11-Dec-2023 08:49:21.782 INFO [main] 
org.apache.catalina.startup.VersionLoggerListener.log Command line argument: 
-Djava.awt.headless=true
11-Dec-2023 08:49:21.782 INFO [main] 
org.apache.catalina.startup.VersionLoggerListener.log Command line argument: 
-Djdk.tls.ephemeralDHKeySize=2048
11-Dec-2023 08:49:21.782 INFO [main] 
org.apache.catalina.startup.VersionLoggerListener.log Command line argument: 
-Djava.protocol.handler.pkgs=org.apache.catalina.webresources
11-Dec-2023 08:49:21.782 INFO [main] 
org.apache.catalina.startup.VersionLoggerListener.log Command line argument: 
-Dorg.apache.catalina.security.SecurityListener.UMASK=0027
11-Dec-2023 08:49:21.783 INFO [main] 
org.apache.catalina.startup.VersionLoggerListener.log Command line argument: 
-Dignore.endorsed.dirs=
11-Dec-2023 08:49:21.783 INFO [main] 
org.apache.catalina.startup.VersionLoggerListener.log Command line argument: 
-Dcatalina.base=/var/lib/tomcat9
11-Dec-2023 08:49:21.783 INFO [main] 
org.apache.catalina.startup.VersionLoggerListener.log Command line argument: 
-Dcatalina.home=/usr/share/tomcat9
11-Dec-2023 08:49:21.783 INFO [main] 
org.apache.catalina.startup.VersionLoggerListener.log Command line argument: 
-Djava.io.tmpdir=/tmp
11-Dec-2023 08:49:21.783 INFO [main] 
org.apache.catalina.core.AprLifecycleListener.lifecycleEvent Loaded APR based 
Apache Tomcat Native library [1.2.23] using APR version [1.6.5].
11-Dec-2023 08:49:21.783 INFO [main] 
org.apache.catalina.core.AprLifecycleListener.lifecycleEvent APR capabilities: 
IPv6 [true], sendfile [true], accept filters [false], random [true].
11-Dec-2023 08:49:21.783 INFO [main] 
org.apache.catalina.core.AprLifecycleListener.lifecycleEvent APR/OpenSSL 
configuration: useAprConnector [false], useOpenSSL [true]
11-Dec-2023 08:49:21.785 INFO [main] 
org.apache.catalina.core.AprLifecycleListener.initializeSSL OpenSSL 
successfully initialized [OpenSSL 1.1.1f  31 Mar 2020]
11-Dec-2023 08:49:21.991 INFO [main] org.apache.coyote.AbstractProtocol.init 
Initializing ProtocolHandler ["http-nio-8080"]
11-Dec-2023 08:49:22.018 INFO [main] org.apache.catalina.startup.Catalina.load 
Server initialization in [503] milliseconds
11-Dec-2023 08:49:22.059 INFO [main] 
org.apache.catalina.core.StandardService.startInternal Starting service 
[Catalina]
11-Dec-2023 08:49:22.059 INFO [main] 
org.apache.catalina.core.StandardEngine.startInternal Starting Servlet engine: 
[Apache Tomcat/9.0.31 (Ubuntu)]
11-Dec-2023 08:49:22.074 INFO [main] 
org.apache.catalina.startup.HostConfig.deployWAR Deploying web application 
archive [/var/lib/tomcat9/webapps/guacamole.war]
11-Dec-2023 08:49:23.643 INFO [main] 
org.apache.jasper.servlet.TldScanner.scanJars At least one JAR was scanned for 
TLDs yet contained no TLDs. Enable debug logging for this logger for a complete 
list of JARs that were scanned but no TLDs were found in them. Skipping 
unneeded JARs during scanning can improve startup time and JSP compilation time.
11-Dec-2023 08:49:25.505 INFO [main] 
org.apache.catalina.startup.HostConfig.deployWAR Deployment of web application 
archive [/var/lib/tomcat9/webapps/guacamole.war] has finished in [3,431] ms
11-Dec-2023 08:49:25.506 INFO [main] 
org.apache.catalina.startup.HostConfig.deployDirectory Deploying web 
application directory [/var/lib/tomcat9/webapps/ROOT]
11-Dec-2023 08:49:25.874 INFO [main] 
org.apache.jasper.servlet.TldScanner.scanJars At least one JAR was scanned for 
TLDs yet contained no TLDs. Enable debug logging for this logger for a complete 
list of JARs that were scanned but no TLDs were found in them. Skipping 
unneeded JARs during scanning can improve startup time and JSP compilation time.
11-Dec-2023 08:49:25.875 INFO [main] 
org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web 
application directory [/var/lib/tomcat9/webapps/ROOT] has finished in [369] ms
11-Dec-2023 08:49:25.880 INFO [main] org.apache.coyote.AbstractProtocol.start 
Starting ProtocolHandler ["http-nio-8080"]
11-Dec-2023 08:49:25.904 INFO [main] org.apache.catalina.startup.Catalina.start 
Server startup in [3,885] milliseconds
11-Dec-2023 08:49:59.445 INFO [http-nio-8080-exec-1] 
org.apache.tomcat.util.http.parser.Cookie.logInvalidHeader A cookie header was 
received [u":"52009170108552345392651"}; 
wp45623="XYZVWDDDDDDYHVWJHMV-HXXL-XBJH-IJZZ-XVIHLUUYHJALDKWLIWAIM-UCHH-XLMK-IKXB-LYLTHWIXUZJLDtpgKIkLLSL_JhtDD";
 
wp6806="ZBTZDs-WXMW:MHJDtlnDl-TZJL-VWUVDDDCVHLHWXM-ZCLA-XUWA-HUVI-ZKIHTAABHAIVDTMWCAJMT-XJCI-XXWV-IUAZ-BILTYTTVLHBVDtpgKIkLLSL_JhtDD"]
 that contained an invalid cookie. That cookie will be ignored.
Note: further occurrences of this error will be logged at DEBUG level.

Von: Geschwentner, Patrick
Gesendet: Montag, 11. Dezember 2023 09:52
An: [email protected]
Cc: Mindbreeze Academy <[email protected]>
Betreff: issue since 1.5.4
Priorität: Hoch

Dear Ladies and Gentlemen!

Since Release 1.5.4 the connection to a RDP Server which is on localhost 
(127.0.0.1) does not work anymore:

[cid:[email protected]]
(this screen shows for >10 seconds)

Afterwards this:

[cid:[email protected]]


Best regards

Patrick

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