[xwiki-users] New installation of XWiki error - xwiki-users@xwiki.org

7 Jul 2017

I am setting up a new instance of Xwiki. I have the following set up 
Tomcat 9.0.0.M22
JTDS 1.3.1
Xwiki 8.4.5
JRE 1.8.0_131
MS SQL 11.0.6567.0

I am getting the following error at startup:

XWiki initialization failed!

Exception thrown during job execution
class java.lang.AbstractMethodError: null
    at net.sourceforge.jtds.jdbc.JtdsConnection.isValid(JtdsConnection.java:2833)
    at
org.apache.commons.dbcp2.DelegatingConnection.isValid(DelegatingConnection.java:918)
    at org.apache.commons.dbcp2.PoolableConnection.validate(PoolableConnection.java:283)
    at
org.apache.commons.dbcp2.PoolableConnectionFactory.validateConnection(PoolableConnectionFactory.java:357)
    at
org.apache.commons.dbcp2.BasicDataSource.validateConnectionFactory(BasicDataSource.java:2307)
    at
org.apache.commons.dbcp2.BasicDataSource.createPoolableConnectionFactory(BasicDataSource.java:2290)
    at
org.apache.commons.dbcp2.BasicDataSource.createDataSource(BasicDataSource.java:2039)
    at org.apache.commons.dbcp2.BasicDataSource.getConnection(BasicDataSource.java:1533)
    at
com.xpn.xwiki.store.DBCPConnectionProvider.configure(DBCPConnectionProvider.java:215)
    at
org.hibernate.connection.ConnectionProviderFactory.newConnectionProvider(ConnectionProviderFactory.java:143)
    at
org.hibernate.connection.ConnectionProviderFactory.newConnectionProvider(ConnectionProviderFactory.java:84)
    at
org.hibernate.cfg.SettingsFactory.createConnectionProvider(SettingsFactory.java:459)
    at org.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:90)
    at org.hibernate.cfg.Configuration.buildSettingsInternal(Configuration.java:2863)
    at org.hibernate.cfg.Configuration.buildSettings(Configuration.java:2859)
    at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1870)
    at
com.xpn.xwiki.store.XWikiHibernateBaseStore.initHibernate(XWikiHibernateBaseStore.java:259)
    at
com.xpn.xwiki.store.XWikiHibernateBaseStore.checkHibernate(XWikiHibernateBaseStore.java:703)
    at
com.xpn.xwiki.store.XWikiHibernateStore.loadXWikiDoc(XWikiHibernateStore.java:861)
    at com.xpn.xwiki.store.XWikiCacheStore.loadXWikiDoc(XWikiCacheStore.java:280)
    at com.xpn.xwiki.XWiki.getDocument(XWiki.java:1811)
    at com.xpn.xwiki.XWiki.getDocument(XWiki.java:1864)
    at com.xpn.xwiki.XWiki.initializeMandatoryDocument(XWiki.java:1269)
    at com.xpn.xwiki.XWiki.initializeMandatoryDocuments(XWiki.java:1243)
    at com.xpn.xwiki.XWiki.initXWiki(XWiki.java:1186)
    at com.xpn.xwiki.XWiki.initXWiki(XWiki.java:1103)
    at com.xpn.xwiki.XWiki.<init>(XWiki.java:1076)
    at
com.xpn.xwiki.internal.XWikiInitializerJob.runInternal(XWikiInitializerJob.java:117)
    at org.xwiki.job.AbstractJob.runInContext(AbstractJob.java:206)
    at org.xwiki.job.AbstractJob.run(AbstractJob.java:189)
    at java.lang.Thread.run(Unknown Source)