A java.lang.NullPointerException exception has occurred.
However, the system should continue working without further problems.
When I create a class, I get this error.
Can you help me fix this error?
Related
An unhandled exception occurred while processing the request.
MissingMethodException: Method not found: 'Microsoft.Extensions.Primitives.StringValues Microsoft.AspNetCore.Http.IHeaderDictionary.get_Authorization()'.
Microsoft.AspNetCore.Authentication.JwtBearer.JwtBearerHandler.HandleAuthenticateAsync() error occur when i implement jwt authentication in .netcore can anyone help me to solve this problem.
I'm using geoserver-2.20.3.war together with Apache Tomcat/9.0.36 on Linux. Everything works as it should but if i try to access the server status via the web administration interface i only get Error messages. I can't really figure out the problem and how to fix it.
`HTTP Status 500 – Internal Server Error
Type Exception Report
Message Handler dispatch failed; nested exception is java.lang.InternalError: java.lang.reflect.InvocationTargetException
Beschreibung The server encountered an unexpected condition that prevented it from fulfilling the request.
Exception
org.springframework.web.util.NestedServletException: Handler dispatch failed; nested exception is java.lang.InternalError: java.lang.reflect.InvocationTargetException
...
Root Cause
java.lang.InternalError: java.lang.reflect.InvocationTargetException
...
Root Cause
java.lang.reflect.InvocationTargetException
...
Root Cause
java.lang.NullPointerException
java.desktop/sun.awt.FontConfiguration.getVersion(FontConfiguration.java:1262)
java.desktop/sun.awt.FontConfiguration.readFontConfigFile(FontConfiguration.java:225)
java.desktop/sun.awt.FontConfiguration.init(FontConfiguration.java:107)
java.desktop/sun.awt.X11FontManager.createFontConfiguration(X11FontManager.java:719)
...
I tried to find a similar issue but unfortunately did not stumble over something really helpful.
I found a solution! The problem were missing fonts. After following these very helpful steps by Andreas Ahlenstorf and installing the font-package dejavu-fonts on linux everything works fine.
I can't start schema registry and kafka rest. When I use kafka-rest-start then exception is occurred:
Exception in thread "main" java.lang.NoSuchFieldError: PASSWORD
nowhere can I find what that means.
EDIT
The exception:
Exception in thread "main" java.lang.NoSuchFieldError: PASSWORD
at io.confluent.kafka.schemaregistry.rest.SchemaRegistryConfig.baseSchemaRegistryConfigDef(SchemaRegistryConfig.java:316)
at io.confluent.kafka.schemaregistry.rest.SchemaRegistryConfig.<clinit>(SchemaRegistryConfig.java:310)
at io.confluent.kafka.schemaregistry.rest.SchemaRegistryMain.main(SchemaRegistryMain.java:41)
schema-registry.properties contents:
listeners=http://0.0.0.0:8081
host.name=weuconn1
avro.compatibility.level=backward
debug=false
kafkastore.connection.url=weukaf1:2181,weukaf2:2181,weukaf3:2181
kafkastore.topic=_schemas
kafkastore.topic.replication.factor=2
This may be a jar mismatch. I got this error but then when I updated the version of confluent-common installed as well, it went away.
I have tried out this websocket- example from github.com/eis/jboss-websocket-demo and get the following Exception:
08:16:46,008 ERROR [org.apache.catalina.core.ContainerBase.[jboss.web].[default-host].[/websocket-web-app].[fi.eis.applications.jboss.poc.websocket.servlets.MyWebSocketServlet]] (http-localhost-127.0.0.1-8080-3) Servlet.service() for servlet fi.eis.applications.jboss.poc.websocket.servlets.MyWebSocketServlet threw exception: java.lang.IllegalStateException: cannot upgrade connection
Actually I don't know what to do in order to get it done.
I would be very thankfull if someone could give me a hint what to do.
Thanks a lot and all the best!
I've been using neo4j 1.9 RC1 for the past two months. Yesterday, after an eclipse crash I started having this this exception:
Exception in thread "main" java.lang.RuntimeException: org.neo4j.kernel.lifecycle.LifecycleException: Component 'org.neo4j.kernel.impl.transaction.TxManager#bf5743' was successfully initialized, but failed to start. Please see attached cause exception.
at org.neo4j.kernel.InternalAbstractGraphDatabase.run(InternalAbstractGraphDatabase.java:282)
at org.neo4j.kernel.EmbeddedGraphDatabase.<init>(EmbeddedGraphDatabase.java:90)
at org.neo4j.kernel.EmbeddedGraphDatabase.<init>(EmbeddedGraphDatabase.java:75)
at org.neo4j.kernel.EmbeddedGraphDatabase.<init>(EmbeddedGraphDatabase.java:60)
at fr.inria.atlanmod.neo4emf.drivers.impl.PersistenceService.<init>(PersistenceService.java:44)
at fr.inria.atlanmod.neo4emf.drivers.impl.PersistenceServiceFactory.createPersistenceService(PersistenceServiceFactory.java:27)
at fr.inria.atlanmod.neo4emf.drivers.impl.PersistenceManager.<init>(PersistenceManager.java:80)
at fr.inria.atlanmod.neo4emf.impl.Neo4emfResource.<init>(Neo4emfResource.java:58)
at fr.inria.atlanmod.neo4emf.impl.Neo4emfResourceFactory.createResource(Neo4emfResourceFactory.java:58)
at main.JDTASTMain.main(JDTASTMain.java:35)
Caused by: org.neo4j.kernel.lifecycle.LifecycleException: Component 'org.neo4j.kernel.impl.transaction.TxManager#bf5743' was successfully initialized, but failed to start. Please see attached cause exception.
at org.neo4j.kernel.lifecycle.LifeSupport$LifecycleInstance.start(LifeSupport.java:497)
at org.neo4j.kernel.lifecycle.LifeSupport.start(LifeSupport.java:104)
at org.neo4j.kernel.InternalAbstractGraphDatabase.run(InternalAbstractGraphDatabase.java:260)
... 9 more
Caused by: org.neo4j.graphdb.TransactionFailureException: Unable to start TM, no active tx log file found but found either tm_tx_log.1 or tm_tx_log.2 file, please set one of them as active or remove them.
at org.neo4j.kernel.impl.transaction.TxManager.openLog(TxManager.java:738)
at org.neo4j.kernel.impl.transaction.TxManager.start(TxManager.java:138)
at org.neo4j.kernel.lifecycle.LifeSupport$LifecycleInstance.start(LifeSupport.java:491)
... 11 more
I am running it with Java 1.7. Any ideas?
It seems that your data directory is corrupt. There is already a suggestion printed to the log to fix that issue:
Unable to start TM, no active tx log file found but found either
tm_tx_log.1 or tm_tx_log.2 file, please set one of them as active or
remove them.