java.sql.SQLException: Failed to locate database cluster configuration file: ha-jdbc-null.xml Error Code: 0

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java.lang.IllegalArgumentException: Failed to locate database cluster configuration file: ha-jdbc-null.xml	at net.sf.hajdbc.xml.XMLDatabaseClusterConfigurationFactory.findResource(XMLDatabaseClusterConfigurationFactory.java:105)	at net.sf.hajdbc.xml.XMLDatabaseClusterConfigurationFactory.findResource(XMLDatabaseClusterConfigurationFactory.java:88)	at net.sf.hajdbc.xml.XMLDatabaseClusterConfigurationFactory.(XMLDatabaseClusterConfigurationFactory.java:115)	at net.sf.hajdbc.xml.XMLDatabaseClusterConfigurationFactory.(XMLDatabaseClusterConfigurationFactory.java:110)	at net.sf.hajdbc.sql.CommonDataSource.create(CommonDataSource.java:76)	at net.sf.hajdbc.sql.CommonDataSource.create(CommonDataSource.java:44)	at net.sf.hajdbc.util.concurrent.LifecycleRegistry.get(LifecycleRegistry.java:62)	at net.sf.hajdbc.util.concurrent.LifecycleRegistry.get(LifecycleRegistry.java:33)	at net.sf.hajdbc.sql.CommonDataSource.getProxy(CommonDataSource.java:83)	at net.sf.hajdbc.sql.DataSource.getConnection(DataSource.java:54)	at org.apache.tomcat.jdbc.pool.PooledConnection.connectUsingDataSource(PooledConnection.java:224)	at org.apache.tomcat.jdbc.pool.PooledConnection.connect(PooledConnection.java:180)	at org.apache.tomcat.jdbc.pool.ConnectionPool.createConnection(ConnectionPool.java:701)	at org.apache.tomcat.jdbc.pool.ConnectionPool.createConnection(ConnectionPool.java:724)	at org.apache.tomcat.jdbc.pool.ConnectionPool.borrowConnection(ConnectionPool.java:635)	at org.apache.tomcat.jdbc.pool.ConnectionPool.getConnection(ConnectionPool.java:188)	at org.apache.tomcat.jdbc.pool.DataSourceProxy.getConnection(DataSourceProxy.java:128)	at org.eclipse.persistence.sessions.JNDIConnector.connect(JNDIConnector.java:123)	at org.eclipse.persistence.exceptions.DatabaseException.sqlException(DatabaseException.java:309)	at org.eclipse.persistence.sessions.JNDIConnector.connect(JNDIConnector.java:135)	at org.eclipse.persistence.sessions.DatasourceLogin.connectToDatasource(DatasourceLogin.java:162)	at org.eclipse.persistence.internal.databaseaccess.DatasourceAccessor.connectInternal(DatasourceAccessor.java:330)	at org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.connectInternal(DatabaseAccessor.java:293)	at org.eclipse.persistence.internal.databaseaccess.DatasourceAccessor.connect(DatasourceAccessor.java:418)	at org.eclipse.persistence.sessions.server.ConnectionPool.buildConnection(ConnectionPool.java:216)	at org.eclipse.persistence.sessions.server.ExternalConnectionPool.startUp(ExternalConnectionPool.java:146)	at org.eclipse.persistence.sessions.server.ServerSession.connect(ServerSession.java:484)	at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.login(DatabaseSessionImpl.java:633)	at org.eclipse.persistence.internal.jpa.EntityManagerFactoryProvider.login(EntityManagerFactoryProvider.java:208)	at org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.deploy(EntityManagerSetupImpl.java:488)