Error number 4001 in 4: Error while evaluating velocity template xwikivars.vm

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Detailed information:
    Error number 3202 in 3: Exception while reading document [xwiki:Main.UserDirectory]
com.xpn.xwiki.XWikiException: Error number 3202 in 3: Exception while reading document [xwiki:Main.UserDirectory]
	at com.xpn.xwiki.store.XWikiHibernateStore.loadXWikiDoc(XWikiHibernateStore.java:831)
	at com.xpn.xwiki.store.XWikiCacheStore.loadXWikiDoc(XWikiCacheStore.java:299)
	at com.xpn.xwiki.XWiki.getDocument(XWiki.java:1504)
	at com.xpn.xwiki.XWiki.getDocument(XWiki.java:1551)
	at com.xpn.xwiki.XWiki.prepareDocuments(XWiki.java:4344)
	at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:330)
	at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:180)
	at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:425)
	at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:228)
	at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913)
	at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:449)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
	at com.xpn.xwiki.web.ActionFilter.doFilter(ActionFilter.java:115)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
	at org.xwiki.wysiwyg.server.filter.ConversionFilter.doFilter(ConversionFilter.java:127)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
	at org.xwiki.container.servlet.filters.internal.SetHTTPHeaderFilter.doFilter(SetHTTPHeaderFilter.java:63)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
	at com.xpn.xwiki.plugin.webdav.XWikiDavFilter.doFilter(XWikiDavFilter.java:66)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
	at org.xwiki.container.servlet.filters.internal.SavedRequestRestorerFilter.doFilter(SavedRequestRestorerFilter.java:208)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
	at org.xwiki.container.servlet.filters.internal.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:111)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
	at org.xwiki.resource.servlet.RoutingFilter.doFilter(RoutingFilter.java:137)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:616)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:522)
	at org.apache.coyote.ajp.AbstractAjpProcessor.process(AbstractAjpProcessor.java:868)
	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:672)
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1502)
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1458)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	at java.lang.Thread.run(Unknown Source)
Caused by: com.xpn.xwiki.XWikiException: Error number 3301 in 3: Exception while switching to database xwiki
	at com.xpn.xwiki.store.XWikiHibernateBaseStore.setDatabase(XWikiHibernateBaseStore.java:738)
	at com.xpn.xwiki.store.XWikiHibernateBaseStore.beginTransaction(XWikiHibernateBaseStore.java:911)
	at com.xpn.xwiki.store.XWikiHibernateBaseStore.beginTransaction(XWikiHibernateBaseStore.java:843)
	at com.xpn.xwiki.store.XWikiHibernateStore.loadXWikiDoc(XWikiHibernateStore.java:703)
	... 54 more
Caused by: org.hibernate.exception.GenericJDBCException: error executing work
	at org.hibernate.exception.SQLStateConverter.handledNonSpecificException(SQLStateConverter.java:140)
	at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:128)
	at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:66)
	at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:52)
	at org.hibernate.impl.SessionImpl.doWork(SessionImpl.java:2001)
	at com.xpn.xwiki.store.XWikiHibernateBaseStore.executeSQL(XWikiHibernateBaseStore.java:752)
	at com.xpn.xwiki.store.XWikiHibernateBaseStore.setDatabase(XWikiHibernateBaseStore.java:721)
	... 57 more
Caused by: java.sql.SQLException: file input/output error: C:\Program Files (x86)\Apache Software Foundation\Tomcat 8.0_Tomcat8-XWiki\work\Catalina\localhost\ROOT/database/xwiki_db.log in statement [SET SCHEMA "PUBLIC"]
	at org.hsqldb.jdbc.JDBCUtil.sqlException(Unknown Source)
	at org.hsqldb.jdbc.JDBCUtil.sqlException(Unknown Source)
	at org.hsqldb.jdbc.JDBCStatement.fetchResult(Unknown Source)
	at org.hsqldb.jdbc.JDBCStatement.execute(Unknown Source)
	at org.apache.commons.dbcp2.DelegatingStatement.execute(DelegatingStatement.java:291)
	at org.apache.commons.dbcp2.DelegatingStatement.execute(DelegatingStatement.java:291)
	at com.xpn.xwiki.store.XWikiHibernateBaseStore$1.execute(XWikiHibernateBaseStore.java:760)
	at org.hibernate.impl.SessionImpl.doWork(SessionImpl.java:1997)
	... 59 more
Caused by: org.hsqldb.HsqlException: file input/output error: C:\Program Files (x86)\Apache Software Foundation\Tomcat 8.0_Tomcat8-XWiki\work\Catalina\localhost\ROOT/database/xwiki_db.log
	at org.hsqldb.error.Error.error(Unknown Source)
	at org.hsqldb.error.Error.error(Unknown Source)
	at org.hsqldb.persist.Log.writeOtherStatement(Unknown Source)
	at org.hsqldb.persist.Logger.writeOtherStatement(Unknown Source)
	at org.hsqldb.StatementSession.execute(Unknown Source)
	at org.hsqldb.Session.executeCompiledStatement(Unknown Source)
	at org.hsqldb.Session.executeDirectStatement(Unknown Source)
	at org.hsqldb.Session.execute(Unknown Source)
	... 65 more