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    Expert tip

    If you're unit testing, you should instantiate only the service and mock the dependencies. If you're testing integration, you should add all the mocking to the configurations file.

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via Stack Overflow by Wojciech
, 1 year ago
Failed to start bean 'mailAdapter'; nested exception is java.lang.IllegalArgumentException: 'taskScheduler' must not be null
via Stack Overflow by Raghu
, 2 years ago
Failed to start bean 'subProtocolWebSocketHandler'; nested exception is java.lang.IllegalArgumentException: No handlers
via Stack Overflow by Leo15
, 1 year ago
Failed to start bean 'org.springframework.integration.monitor.IntegrationMBeanExporter#0#0b0d7c9d-ba16-4f2c-9c9b-63e2284a42c0'; nested exception is org.springframework.jmx.export.UnableToRegisterMBeanException: Unable to register MBean
via Stack Overflow by ams
, 1 year ago
Failed to start bean 'quartzScheduler'; nested exception is org.springframework.scheduling.SchedulingException: Could not start Quartz Scheduler; nested exception is org.quartz.SchedulerConfigException: Failure occured during job recovery. [See
via GitHub by stacysimpson
, 4 months ago
Failed to start bean 'documentationPluginsBootstrapper'; nested exception is java.util.ConcurrentModificationException
via GitHub by andregmoeller
, 1 year ago
Failed to start bean 'adapter'; nested exception is org.springframework.integration.kafka.core.PartitionNotFoundException: Partition [si.topicabc2355631326,0] has no leader or has not been found
java.lang.IllegalArgumentException: 'taskScheduler' must not be null	at org.springframework.util.Assert.notNull(Assert.java:115)	at org.springframework.integration.mail.ImapIdleChannelAdapter.doStart(ImapIdleChannelAdapter.java:158)	at org.springframework.integration.endpoint.AbstractEndpoint.start(AbstractEndpoint.java:94)	at org.springframework.context.support.DefaultLifecycleProcessor.doStart(DefaultLifecycleProcessor.java:173)	at org.springframework.context.support.DefaultLifecycleProcessor.access$200(DefaultLifecycleProcessor.java:51)	at org.springframework.context.support.DefaultLifecycleProcessor$LifecycleGroup.start(DefaultLifecycleProcessor.java:346)	at org.springframework.context.support.DefaultLifecycleProcessor.startBeans(DefaultLifecycleProcessor.java:149)	at org.springframework.context.support.DefaultLifecycleProcessor.onRefresh(DefaultLifecycleProcessor.java:112)	at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:874)	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:544)	at org.springframework.context.annotation.AnnotationConfigApplicationContext.(AnnotationConfigApplicationContext.java:84)	at undefined.Main.main(Main.java:13)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:498)	at com.intellij.rt.execution.application.AppMain.main(AppMain.java:147)