ERROR 2020-03-11 18:11:30,190 [stardog-user-4] com.complexible.stardog.virtual.DefaultVirtualGraphRegistry:createVirtualGraph(368): Cannot initialize virtual graph music
java.lang.RuntimeException: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
	at com.complexible.stardog.virtual.vega.rdbms.RdbmsDataSource.lambda$connect$0(RdbmsDataSource.java:61) ~[stardog-virtual-core-7.1.2.jar:?]
	at com.complexible.stardog.virtual.vega.RuntimeDriverLoader.executeUnderClassLoader(RuntimeDriverLoader.java:124) ~[stardog-virtual-core-7.1.2.jar:?]
	at com.complexible.stardog.virtual.vega.rdbms.RdbmsDataSource.connect(RdbmsDataSource.java:56) ~[stardog-virtual-core-7.1.2.jar:?]
	at com.complexible.stardog.virtual.vega.rdbms.RdbmsVirtualGraphFactory.create(RdbmsVirtualGraphFactory.java:65) ~[stardog-virtual-core-7.1.2.jar:?]
	at com.complexible.stardog.virtual.vega.rdbms.RdbmsVirtualGraphFactory.create(RdbmsVirtualGraphFactory.java:49) ~[stardog-virtual-core-7.1.2.jar:?]
	at com.complexible.stardog.virtual.DefaultVirtualGraphRegistry.createVirtualGraph(DefaultVirtualGraphRegistry.java:365) ~[stardog-virtual-core-7.1.2.jar:?]
	at com.complexible.stardog.virtual.DefaultVirtualGraphRegistry.createVirtualGraph(DefaultVirtualGraphRegistry.java:346) ~[stardog-virtual-core-7.1.2.jar:?]
	at com.complexible.stardog.virtual.DefaultVirtualGraphRegistry.add(DefaultVirtualGraphRegistry.java:211) ~[stardog-virtual-core-7.1.2.jar:?]
	at com.complexible.stardog.virtual.SecuredVirtualGraphRegistry.add(SecuredVirtualGraphRegistry.java:149) ~[stardog-virtual-core-7.1.2.jar:?]
	at com.complexible.stardog.protocols.http.server.virtual.admin.VirtualGraphHttpService.addVG(VirtualGraphHttpService.java:414) ~[stardog-virtual-protocols-http-server-7.1.2.jar:?]
	at com.complexible.stardog.protocols.http.server.virtual.admin.VirtualGraphHttpService.add(VirtualGraphHttpService.java:213) ~[stardog-virtual-protocols-http-server-7.1.2.jar:?]
	at com.stardog.http.server.undertow.jaxrs.ExtractRoutes.lambda$handleIt$5(ExtractRoutes.java:192) ~[stardog-protocols-http-server-7.1.2.jar:?]
	at org.apache.shiro.subject.support.SubjectRunnable.doRun(SubjectRunnable.java:120) [shiro-core-1.3.0.jar:1.3.0]
	at org.apache.shiro.subject.support.SubjectRunnable.run(SubjectRunnable.java:108) [shiro-core-1.3.0.jar:1.3.0]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_242]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_242]
	at java.lang.Thread.run(Thread.java:748) [?:1.8.0_242]
Caused by: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[?:1.8.0_242]
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) ~[?:1.8.0_242]
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[?:1.8.0_242]
	at java.lang.reflect.Constructor.newInstance(Constructor.java:423) ~[?:1.8.0_242]
	at com.mysql.jdbc.Util.handleNewInstance(Util.java:425) ~[mysql-connector-java-5.1.48.jar:5.1.48]
	at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:990) ~[mysql-connector-java-5.1.48.jar:5.1.48]
	at com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:335) ~[mysql-connector-java-5.1.48.jar:5.1.48]
	at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2187) ~[mysql-connector-java-5.1.48.jar:5.1.48]
	at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2220) ~[mysql-connector-java-5.1.48.jar:5.1.48]
	at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2015) ~[mysql-connector-java-5.1.48.jar:5.1.48]
	at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:768) ~[mysql-connector-java-5.1.48.jar:5.1.48]
	at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:47) ~[mysql-connector-java-5.1.48.jar:5.1.48]
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[?:1.8.0_242]
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) ~[?:1.8.0_242]
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[?:1.8.0_242]
	at java.lang.reflect.Constructor.newInstance(Constructor.java:423) ~[?:1.8.0_242]
	at com.mysql.jdbc.Util.handleNewInstance(Util.java:425) ~[mysql-connector-java-5.1.48.jar:5.1.48]
	at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:385) ~[mysql-connector-java-5.1.48.jar:5.1.48]
	at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:323) ~[mysql-connector-java-5.1.48.jar:5.1.48]
	at org.apache.tomcat.jdbc.pool.PooledConnection.connectUsingDriver(PooledConnection.java:319) ~[tomcat-jdbc-9.0.24.jar:?]
	at org.apache.tomcat.jdbc.pool.PooledConnection.connect(PooledConnection.java:212) ~[tomcat-jdbc-9.0.24.jar:?]
	at org.apache.tomcat.jdbc.pool.ConnectionPool.createConnection(ConnectionPool.java:744) ~[tomcat-jdbc-9.0.24.jar:?]
	at org.apache.tomcat.jdbc.pool.ConnectionPool.borrowConnection(ConnectionPool.java:676) ~[tomcat-jdbc-9.0.24.jar:?]
	at org.apache.tomcat.jdbc.pool.ConnectionPool.init(ConnectionPool.java:483) ~[tomcat-jdbc-9.0.24.jar:?]
	at org.apache.tomcat.jdbc.pool.ConnectionPool.<init>(ConnectionPool.java:154) ~[tomcat-jdbc-9.0.24.jar:?]
	at org.apache.tomcat.jdbc.pool.DataSourceProxy.pCreatePool(DataSourceProxy.java:118) ~[tomcat-jdbc-9.0.24.jar:?]
	at org.apache.tomcat.jdbc.pool.DataSourceProxy.createPool(DataSourceProxy.java:107) ~[tomcat-jdbc-9.0.24.jar:?]
	at org.apache.tomcat.jdbc.pool.DataSourceProxy.getConnection(DataSourceProxy.java:131) ~[tomcat-jdbc-9.0.24.jar:?]
	at com.complexible.stardog.virtual.vega.rdbms.RdbmsDataSource.lambda$connect$0(RdbmsDataSource.java:58) ~[stardog-virtual-core-7.1.2.jar:?]
	... 16 more
Caused by: java.net.ConnectException: Connection refused (Connection refused)
	at java.net.PlainSocketImpl.socketConnect(Native Method) ~[?:1.8.0_242]
	at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) ~[?:1.8.0_242]
	at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) ~[?:1.8.0_242]
	at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) ~[?:1.8.0_242]
	at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) ~[?:1.8.0_242]
	at java.net.Socket.connect(Socket.java:607) ~[?:1.8.0_242]
	at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:211) ~[mysql-connector-java-5.1.48.jar:5.1.48]
	at com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:299) ~[mysql-connector-java-5.1.48.jar:5.1.48]
	at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2187) ~[mysql-connector-java-5.1.48.jar:5.1.48]
	at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2220) ~[mysql-connector-java-5.1.48.jar:5.1.48]
	at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2015) ~[mysql-connector-java-5.1.48.jar:5.1.48]
	at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:768) ~[mysql-connector-java-5.1.48.jar:5.1.48]
	at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:47) ~[mysql-connector-java-5.1.48.jar:5.1.48]
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[?:1.8.0_242]
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) ~[?:1.8.0_242]
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[?:1.8.0_242]
	at java.lang.reflect.Constructor.newInstance(Constructor.java:423) ~[?:1.8.0_242]
	at com.mysql.jdbc.Util.handleNewInstance(Util.java:425) ~[mysql-connector-java-5.1.48.jar:5.1.48]
	at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:385) ~[mysql-connector-java-5.1.48.jar:5.1.48]
	at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:323) ~[mysql-connector-java-5.1.48.jar:5.1.48]
	at org.apache.tomcat.jdbc.pool.PooledConnection.connectUsingDriver(PooledConnection.java:319) ~[tomcat-jdbc-9.0.24.jar:?]
	at org.apache.tomcat.jdbc.pool.PooledConnection.connect(PooledConnection.java:212) ~[tomcat-jdbc-9.0.24.jar:?]
	at org.apache.tomcat.jdbc.pool.ConnectionPool.createConnection(ConnectionPool.java:744) ~[tomcat-jdbc-9.0.24.jar:?]
	at org.apache.tomcat.jdbc.pool.ConnectionPool.borrowConnection(ConnectionPool.java:676) ~[tomcat-jdbc-9.0.24.jar:?]
	at org.apache.tomcat.jdbc.pool.ConnectionPool.init(ConnectionPool.java:483) ~[tomcat-jdbc-9.0.24.jar:?]
	at org.apache.tomcat.jdbc.pool.ConnectionPool.<init>(ConnectionPool.java:154) ~[tomcat-jdbc-9.0.24.jar:?]
	at org.apache.tomcat.jdbc.pool.DataSourceProxy.pCreatePool(DataSourceProxy.java:118) ~[tomcat-jdbc-9.0.24.jar:?]
	at org.apache.tomcat.jdbc.pool.DataSourceProxy.createPool(DataSourceProxy.java:107) ~[tomcat-jdbc-9.0.24.jar:?]
	at org.apache.tomcat.jdbc.pool.DataSourceProxy.getConnection(DataSourceProxy.java:131) ~[tomcat-jdbc-9.0.24.jar:?]
	at com.complexible.stardog.virtual.vega.rdbms.RdbmsDataSource.lambda$connect$0(RdbmsDataSource.java:58) ~[stardog-virtual-core-7.1.2.jar:?]
	... 16 more
WARN  2020-03-11 18:11:30,192 [stardog-user-4] com.complexible.stardog.protocols.http.server.StardogUndertowErrorHandler:accept(61): Unexpected exception was handled by the server
java.net.ConnectException: Connection refused (Connection refused)
	at java.net.PlainSocketImpl.socketConnect(Native Method) ~[?:1.8.0_242]
	at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) ~[?:1.8.0_242]
	at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) ~[?:1.8.0_242]
	at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) ~[?:1.8.0_242]
	at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) ~[?:1.8.0_242]
	at java.net.Socket.connect(Socket.java:607) ~[?:1.8.0_242]
	at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:211) ~[mysql-connector-java-5.1.48.jar:5.1.48]
	at com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:299) ~[mysql-connector-java-5.1.48.jar:5.1.48]
	at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2187) ~[mysql-connector-java-5.1.48.jar:5.1.48]
	at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2220) ~[mysql-connector-java-5.1.48.jar:5.1.48]
	at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2015) ~[mysql-connector-java-5.1.48.jar:5.1.48]
	at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:768) ~[mysql-connector-java-5.1.48.jar:5.1.48]
	at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:47) ~[mysql-connector-java-5.1.48.jar:5.1.48]
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[?:1.8.0_242]
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) ~[?:1.8.0_242]
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[?:1.8.0_242]
	at java.lang.reflect.Constructor.newInstance(Constructor.java:423) ~[?:1.8.0_242]
	at com.mysql.jdbc.Util.handleNewInstance(Util.java:425) ~[mysql-connector-java-5.1.48.jar:5.1.48]
	at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:385) ~[mysql-connector-java-5.1.48.jar:5.1.48]
	at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:323) ~[mysql-connector-java-5.1.48.jar:5.1.48]
	at org.apache.tomcat.jdbc.pool.PooledConnection.connectUsingDriver(PooledConnection.java:319) ~[tomcat-jdbc-9.0.24.jar:?]
	at org.apache.tomcat.jdbc.pool.PooledConnection.connect(PooledConnection.java:212) ~[tomcat-jdbc-9.0.24.jar:?]
	at org.apache.tomcat.jdbc.pool.ConnectionPool.createConnection(ConnectionPool.java:744) ~[tomcat-jdbc-9.0.24.jar:?]
	at org.apache.tomcat.jdbc.pool.ConnectionPool.borrowConnection(ConnectionPool.java:676) ~[tomcat-jdbc-9.0.24.jar:?]
	at org.apache.tomcat.jdbc.pool.ConnectionPool.init(ConnectionPool.java:483) ~[tomcat-jdbc-9.0.24.jar:?]
	at org.apache.tomcat.jdbc.pool.ConnectionPool.<init>(ConnectionPool.java:154) ~[tomcat-jdbc-9.0.24.jar:?]
	at org.apache.tomcat.jdbc.pool.DataSourceProxy.pCreatePool(DataSourceProxy.java:118) ~[tomcat-jdbc-9.0.24.jar:?]
	at org.apache.tomcat.jdbc.pool.DataSourceProxy.createPool(DataSourceProxy.java:107) ~[tomcat-jdbc-9.0.24.jar:?]
	at org.apache.tomcat.jdbc.pool.DataSourceProxy.getConnection(DataSourceProxy.java:131) ~[tomcat-jdbc-9.0.24.jar:?]
	at com.complexible.stardog.virtual.vega.rdbms.RdbmsDataSource.lambda$connect$0(RdbmsDataSource.java:58) ~[stardog-virtual-core-7.1.2.jar:?]
	at com.complexible.stardog.virtual.vega.RuntimeDriverLoader.executeUnderClassLoader(RuntimeDriverLoader.java:124) ~[stardog-virtual-core-7.1.2.jar:?]
	at com.complexible.stardog.virtual.vega.rdbms.RdbmsDataSource.connect(RdbmsDataSource.java:56) ~[stardog-virtual-core-7.1.2.jar:?]
	at com.complexible.stardog.virtual.vega.rdbms.RdbmsVirtualGraphFactory.create(RdbmsVirtualGraphFactory.java:65) ~[stardog-virtual-core-7.1.2.jar:?]
	at com.complexible.stardog.virtual.vega.rdbms.RdbmsVirtualGraphFactory.create(RdbmsVirtualGraphFactory.java:49) ~[stardog-virtual-core-7.1.2.jar:?]
	at com.complexible.stardog.virtual.DefaultVirtualGraphRegistry.createVirtualGraph(DefaultVirtualGraphRegistry.java:365) ~[stardog-virtual-core-7.1.2.jar:?]
	at com.complexible.stardog.virtual.DefaultVirtualGraphRegistry.createVirtualGraph(DefaultVirtualGraphRegistry.java:346) ~[stardog-virtual-core-7.1.2.jar:?]
	at com.complexible.stardog.virtual.DefaultVirtualGraphRegistry.add(DefaultVirtualGraphRegistry.java:211) ~[stardog-virtual-core-7.1.2.jar:?]
	at com.complexible.stardog.virtual.SecuredVirtualGraphRegistry.add(SecuredVirtualGraphRegistry.java:149) ~[stardog-virtual-core-7.1.2.jar:?]
	at com.complexible.stardog.protocols.http.server.virtual.admin.VirtualGraphHttpService.addVG(VirtualGraphHttpService.java:414) ~[stardog-virtual-protocols-http-server-7.1.2.jar:?]
	at com.complexible.stardog.protocols.http.server.virtual.admin.VirtualGraphHttpService.add(VirtualGraphHttpService.java:213) ~[stardog-virtual-protocols-http-server-7.1.2.jar:?]
	at com.stardog.http.server.undertow.jaxrs.ExtractRoutes.lambda$handleIt$5(ExtractRoutes.java:192) ~[stardog-protocols-http-server-7.1.2.jar:?]
	at org.apache.shiro.subject.support.SubjectRunnable.doRun(SubjectRunnable.java:120) [shiro-core-1.3.0.jar:1.3.0]
	at org.apache.shiro.subject.support.SubjectRunnable.run(SubjectRunnable.java:108) [shiro-core-1.3.0.jar:1.3.0]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_242]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_242]
	at java.lang.Thread.run(Thread.java:748) [?:1.8.0_242]