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.
Check if there is no nexus running. If not, delete
java.lang.IllegalStateException: Client is not startedat com.google.common.base.Preconditions.checkState(Preconditions.java:176)at org.apache.curator.CuratorZookeeperClient.getZooKeeper(CuratorZookeeperClient.java:113)