Desperately need help here

/Library/Java/JavaVirtualMachines/jdk1.8.0_181.jdk/Contents/Home/bin/java "-javaagent:/Applications/IntelliJ IDEA CE.app/Contents/lib/idea_rt.jar=60471:/Applications/IntelliJ IDEA CE.app/Contents/bin" -Dfile.encoding=UTF-8 -classpath /Library/Java/JavaVirtualMachines/jdk1.8.0_181.jdk/Contents/Home/jre/lib/charsets.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_181.jdk/Contents/Home/jre/lib/deploy.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_181.jdk/Contents/Home/jre/lib/ext/cldrdata.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_181.jdk/Contents/Home/jre/lib/ext/dnsns.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_181.jdk/Contents/Home/jre/lib/ext/jaccess.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_181.jdk/Contents/Home/jre/lib/ext/jfxrt.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_181.jdk/Contents/Home/jre/lib/ext/localedata.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_181.jdk/Contents/Home/jre/lib/ext/nashorn.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_181.jdk/Contents/Home/jre/lib/ext/sunec.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_181.jdk/Contents/Home/jre/lib/ext/sunjce_provider.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_181.jdk/Contents/Home/jre/lib/ext/sunpkcs11.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_181.jdk/Contents/Home/jre/lib/ext/zipfs.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_181.jdk/Contents/Home/jre/lib/javaws.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_181.jdk/Contents/Home/jre/lib/jce.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_181.jdk/Contents/Home/jre/lib/jfr.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_181.jdk/Contents/Home/jre/lib/jfxswt.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_181.jdk/Contents/Home/jre/lib/jsse.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_181.jdk/Contents/Home/jre/lib/management-agent.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_181.jdk/Contents/Home/jre/lib/plugin.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_181.jdk/Contents/Home/jre/lib/resources.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_181.jdk/Contents/Home/jre/lib/rt.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_181.jdk/Contents/Home/lib/ant-javafx.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_181.jdk/Contents/Home/lib/dt.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_181.jdk/Contents/Home/lib/javafx-mx.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_181.jdk/Contents/Home/lib/jconsole.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_181.jdk/Contents/Home/lib/packager.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_181.jdk/Contents/Home/lib/sa-jdi.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_181.jdk/Contents/Home/lib/tools.jar:/Users/marv/Documents/Coding/Treehouse/contactmgr-hibernate/out/production/classes:/Users/marv/Documents/Coding/Treehouse/contactmgr-hibernate/out/production/resources:/Users/marv/.gradle/caches/modules-2/files-2.1/org.hibernate/hibernate-core/5.3.6.Final/42c7130757c3f67dda008d8edb28b381a09a7ce6/hibernate-core-5.3.6.Final.jar:/Users/marv/.gradle/caches/modules-2/files-2.1/com.h2database/h2/1.4.197/bb391050048ca8ae3e32451b5a3714ecd3596a46/h2-1.4.197.jar:/Users/marv/.gradle/caches/modules-2/files-2.1/javax.transaction/jta/1.1/2ca09f0b36ca7d71b762e14ea2ff09d5eac57558/jta-1.1.jar:/Users/marv/.gradle/caches/modules-2/files-2.1/org.hibernate.common/hibernate-commons-annotations/5.0.4.Final/965a18fdf939ee75e41f7918532d37b3a8350535/hibernate-commons-annotations-5.0.4.Final.jar:/Users/marv/.gradle/caches/modules-2/files-2.1/org.jboss.logging/jboss-logging/3.3.2.Final/3789d00e859632e6c6206adc0c71625559e6e3b0/jboss-logging-3.3.2.Final.jar:/Users/marv/.gradle/caches/modules-2/files-2.1/javax.persistence/javax.persistence-api/2.2/25665ac8c0b62f50e6488173233239120fc52c96/javax.persistence-api-2.2.jar:/Users/marv/.gradle/caches/modules-2/files-2.1/org.javassist/javassist/3.23.1-GA/c072c13dcb7f705471c40bafb1536171df850ab2/javassist-3.23.1-GA.jar:/Users/marv/.gradle/caches/modules-2/files-2.1/net.bytebuddy/byte-buddy/1.8.17/9a36bc0f6eb9f941da0526ad89c4fb4b8ab580f0/byte-buddy-1.8.17.jar:/Users/marv/.gradle/caches/modules-2/files-2.1/antlr/antlr/2.7.7/83cd2cd674a217ade95a4bb83a8a14f351f48bd0/antlr-2.7.7.jar:/Users/marv/.gradle/caches/modules-2/files-2.1/org.jboss.spec.javax.transaction/jboss-transaction-api_1.2_spec/1.1.1.Final/a8485cab9484dda36e9a8c319e76b5cc18797b58/jboss-transaction-api_1.2_spec-1.1.1.Final.jar:/Users/marv/.gradle/caches/modules-2/files-2.1/org.jboss/jandex/2.0.5.Final/7060f67764565b9ee9d467e3ed0cb8a9c601b23a/jandex-2.0.5.Final.jar:/Users/marv/.gradle/caches/modules-2/files-2.1/com.fasterxml/classmate/1.3.4/3d5f48f10bbe4eb7bd862f10c0583be2e0053c6/classmate-1.3.4.jar:/Users/marv/.gradle/caches/modules-2/files-2.1/javax.activation/javax.activation-api/1.2.0/85262acf3ca9816f9537ca47d5adeabaead7cb16/javax.activation-api-1.2.0.jar:/Users/marv/.gradle/caches/modules-2/files-2.1/dom4j/dom4j/1.6.1/5d3ccc056b6f056dbf0dddfdf43894b9065a8f94/dom4j-1.6.1.jar com.hasenbau.contactmgr.Application
Sep 17, 2018 1:51:25 PM org.hibernate.Version logVersion
INFO: HHH000412: Hibernate Core {5.3.6.Final}
Sep 17, 2018 1:51:25 PM org.hibernate.cfg.Environment <clinit>
INFO: HHH000206: hibernate.properties not found
Sep 17, 2018 1:51:25 PM org.hibernate.annotations.common.reflection.java.JavaReflectionManager <clinit>
INFO: HCANN000001: Hibernate Commons Annotations {5.0.4.Final}
Sep 17, 2018 1:51:25 PM org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl configure
WARN: HHH10001002: Using Hibernate built-in connection pool (not for production use!)
Sep 17, 2018 1:51:25 PM org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl buildCreator
INFO: HHH10001005: using driver [org.h2.Driver] at URL [jdbc:h2:./data/contactmgr]
Sep 17, 2018 1:51:25 PM org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl buildCreator
INFO: HHH10001001: Connection properties: {}
Sep 17, 2018 1:51:25 PM org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl buildCreator
INFO: HHH10001003: Autocommit mode: false
Sep 17, 2018 1:51:25 PM org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl$PooledConnections <init>
INFO: HHH000115: Hibernate connection pool size: 20 (min=1)
Sep 17, 2018 1:51:25 PM org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator initiateService
WARN: HHH000342: Could not obtain connection to query metadata : null
Sep 17, 2018 1:51:25 PM org.hibernate.dialect.Dialect <init>
INFO: HHH000400: Using dialect: org.hibernate.dialect.H2Dialect
Sep 17, 2018 1:51:26 PM org.hibernate.engine.jdbc.env.internal.LobCreatorBuilderImpl makeLobCreatorBuilder
INFO: HHH000422: Disabling contextual LOB creation as connection was null
Sep 17, 2018 1:51:26 PM org.hibernate.engine.jdbc.spi.SqlExceptionHelper logExceptions
WARN: SQL Error: 90020, SQLState: 90020
Sep 17, 2018 1:51:26 PM org.hibernate.engine.jdbc.spi.SqlExceptionHelper logExceptions
ERROR: Datenbank wird wahrscheinlich bereits benutzt: null. Mögliche Lösungen: alle Verbindungen schliessen; Server Modus verwenden
Database may be already in use: null. Possible solutions: close all other connection(s); use the server mode [90020-197]
Exception in thread "main" java.lang.ExceptionInInitializerError
Caused by: org.hibernate.service.spi.ServiceException: Unable to create requested service [org.hibernate.engine.jdbc.env.spi.JdbcEnvironment]
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:275)
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:237)
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:214)
    at org.hibernate.id.factory.internal.DefaultIdentifierGeneratorFactory.injectServices(DefaultIdentifierGeneratorFactory.java:152)
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.injectDependencies(AbstractServiceRegistryImpl.java:286)
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:243)
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:214)
    at org.hibernate.boot.internal.InFlightMetadataCollectorImpl.<init>(InFlightMetadataCollectorImpl.java:179)
    at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.complete(MetadataBuildingProcess.java:119)
    at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.build(MetadataBuildingProcess.java:84)
    at org.hibernate.boot.internal.MetadataBuilderImpl.build(MetadataBuilderImpl.java:474)
    at org.hibernate.boot.internal.MetadataBuilderImpl.build(MetadataBuilderImpl.java:85)
    at org.hibernate.boot.MetadataSources.buildMetadata(MetadataSources.java:180)
    at com.hasenbau.contactmgr.Application.buildSessionFactory(Application.java:18)
    at com.hasenbau.contactmgr.Application.<clinit>(Application.java:14)
Caused by: org.hibernate.exception.GenericJDBCException: Error calling Driver#connect
    at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:47)
    at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:113)
    at org.hibernate.engine.jdbc.connections.internal.BasicConnectionCreator.convertSqlException(BasicConnectionCreator.java:118)
    at org.hibernate.engine.jdbc.connections.internal.DriverConnectionCreator.makeConnection(DriverConnectionCreator.java:41)
    at org.hibernate.engine.jdbc.connections.internal.BasicConnectionCreator.createConnection(BasicConnectionCreator.java:58)
    at org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl$PooledConnections.addConnections(DriverManagerConnectionProviderImpl.java:363)
    at org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl$PooledConnections.<init>(DriverManagerConnectionProviderImpl.java:282)
    at org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl$PooledConnections.<init>(DriverManagerConnectionProviderImpl.java:260)
    at org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl$PooledConnections$Builder.build(DriverManagerConnectionProviderImpl.java:401)
    at org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl.buildPool(DriverManagerConnectionProviderImpl.java:112)
    at org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl.configure(DriverManagerConnectionProviderImpl.java:75)
    at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.configureService(StandardServiceRegistryImpl.java:100)
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:246)
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:214)
    at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.buildJdbcConnectionAccess(JdbcEnvironmentInitiator.java:145)
    at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:66)
    at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:35)
    at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.initiateService(StandardServiceRegistryImpl.java:94)
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:263)
    ... 14 more
Caused by: org.h2.jdbc.JdbcSQLException: Datenbank wird wahrscheinlich bereits benutzt: null. Mögliche Lösungen: alle Verbindungen schliessen; Server Modus verwenden
Database may be already in use: null. Possible solutions: close all other connection(s); use the server mode [90020-197]
    at org.h2.message.DbException.getJdbcSQLException(DbException.java:357)
    at org.h2.message.DbException.get(DbException.java:168)
    at org.h2.mvstore.db.MVTableEngine$Store.convertIllegalStateException(MVTableEngine.java:188)
    at org.h2.mvstore.db.MVTableEngine$Store.open(MVTableEngine.java:168)
    at org.h2.mvstore.db.MVTableEngine.init(MVTableEngine.java:100)
    at org.h2.engine.Database.getPageStore(Database.java:2538)
    at org.h2.engine.Database.open(Database.java:709)
    at org.h2.engine.Database.openDatabase(Database.java:286)
    at org.h2.engine.Database.<init>(Database.java:280)
    at org.h2.engine.Engine.openSession(Engine.java:66)
    at org.h2.engine.Engine.openSession(Engine.java:179)
    at org.h2.engine.Engine.createSessionAndValidate(Engine.java:157)
    at org.h2.engine.Engine.createSession(Engine.java:140)
    at org.h2.engine.Engine.createSession(Engine.java:28)
    at org.h2.engine.SessionRemote.connectEmbeddedOrServer(SessionRemote.java:351)
    at org.h2.jdbc.JdbcConnection.<init>(JdbcConnection.java:124)
    at org.h2.jdbc.JdbcConnection.<init>(JdbcConnection.java:103)
    at org.h2.Driver.connect(Driver.java:69)
    at org.hibernate.engine.jdbc.connections.internal.DriverConnectionCreator.makeConnection(DriverConnectionCreator.java:38)
    ... 29 more
Caused by: java.lang.IllegalStateException: The file is locked: nio:/Users/marv/Documents/Coding/Treehouse/contactmgr-hibernate/data/contactmgr.mv.db [1.4.197/7]
    at org.h2.mvstore.DataUtils.newIllegalStateException(DataUtils.java:870)
    at org.h2.mvstore.FileStore.open(FileStore.java:173)
    at org.h2.mvstore.MVStore.<init>(MVStore.java:350)
    at org.h2.mvstore.MVStore$Builder.open(MVStore.java:2934)
    at org.h2.mvstore.db.MVTableEngine$Store.open(MVTableEngine.java:155)
    ... 44 more