java.lang.IllegalStateException: instance must be started before calling this method

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

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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.

Solutions on the web

via curator-user by Gabriel Reid, 1 year 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 Apache's JIRA Issue Tracker by Bruno Dumon, 1 year ago
instance must be started before calling this method
via qtpselenium.com by Unknown author, 2 years 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
via GitHub by purimitla15
, 1 year 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 org.apache.curator.framework.recipes.cache.PathChildrenCache.getDataAndStat(PathChildrenCache.java:547)
at org.apache.curator.framework.recipes.cache.PathChildrenCache.processChildren(PathChildrenCache.java:670)
at org.apache.curator.framework.recipes.cache.PathChildrenCache.access$100(PathChildrenCache.java:68)
at org.apache.curator.framework.imps.CuratorFrameworkImpl.sendToBackgroundCallback(CuratorFrameworkImpl.java:734)
at org.apache.curator.framework.imps.CuratorFrameworkImpl.processBackgroundOperation(CuratorFrameworkImpl.java:515)
at org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:590)

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