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  1. ,

    checkState() is Static convenience methods that help a method or constructor check whether it was invoked correctly (whether its preconditions have been met). This occurs when the precondition does not met.

  2. ,

    Check if there is no nexus running. If not, delete sonatype-work/nexus/nexus.lock .

Solutions on the web

via Apache's JIRA Issue Tracker by Bruno Dumon, 1 year ago
via curator-user by Gabriel Reid, 2 years ago
instance must be started before calling this method
via curator-user by Gabriel Reid, 1 year ago
instance must be started before calling this method
via Google Groups by bp, 1 year ago
The path to the chromedriver executable must be set by the webdriver.chrome.driver system property
via Java.net JIRA by jan.supol, 1 year ago
Stream provider is not defined. It must be set before writing first bytes to the entity output stream.
via Google Groups by karuna nidhi, 8 months ago
The path to the driver executable must be set by the webdriver.ie.driver system property; for more information, see https://github.com/SeleniumHQ/selenium/wiki/InternetExplorerDriver. The latest version can be downloaded from http://selenium-release.storage.googleapis.com/index.html
java.lang.IllegalStateException: instance must be started before calling this method	at com.google.common.base.Preconditions.checkState(Preconditions.java:149)	at org.apache.curator.framework.imps.CuratorFrameworkImpl.getData(CuratorFrameworkImpl.java:360)	at org.apache.curator.framework.recipes.cache.PathChildrenCache.getDataAndStat(PathChildrenCache.java:545)	at org.apache.curator.framework.recipes.cache.PathChildrenCache.processChildren(PathChildrenCache.java:668)	at org.apache.curator.framework.recipes.cache.PathChildrenCache.access$200(PathChildrenCache.java:68)	at org.apache.curator.framework.recipes.cache.PathChildrenCache$4.processResult(PathChildrenCache.java:490)	at org.apache.curator.framework.imps.CuratorFrameworkImpl.sendToBackgroundCallback(CuratorFrameworkImpl.java:715)	at org.apache.curator.framework.imps.CuratorFrameworkImpl.processBackgroundOperation(CuratorFrameworkImpl.java:502)	at org.apache.curator.framework.imps.GetChildrenBuilderImpl$2.processResult(GetChildrenBuilderImpl.java:166)	at org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:590)	at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:498)