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javax.servlet.ServletException: vcat.VCatException: Error reading Wikimedia Toolforge meta information for dbname 'eswiki'

javax.servlet.ServletException: javax.servlet.ServletException: vcat.VCatException: Error reading Wikimedia Toolforge meta information for dbname 'eswiki'
	at vcat.webapp.base.AbstractVCatServlet.doRequest(AbstractVCatServlet.java:70)
	at vcat.toolforge.webapp.AbstractVCatToolforgeServlet.doRequest(AbstractVCatToolforgeServlet.java:27)
	at vcat.webapp.base.AbstractVCatServlet.doGet(AbstractVCatServlet.java:32)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:620)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
	at net.bull.javamelody.MonitoringFilter.doFilter(MonitoringFilter.java:232)
	at net.bull.javamelody.MonitoringFilter.doFilter(MonitoringFilter.java:209)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:493)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
	at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1041)
	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:607)
	at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:313)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1152)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:622)
	at java.lang.Thread.run(Thread.java:748)
Caused by: javax.servlet.ServletException: vcat.VCatException: Error reading Wikimedia Toolforge meta information for dbname 'eswiki'
	at vcat.toolforge.webapp.ToolforgeVCatServlet.renderedFileFromRequest(ToolforgeVCatServlet.java:184)
	at vcat.webapp.base.AbstractVCatServlet.doRequest(AbstractVCatServlet.java:42)
	... 24 more
Caused by: vcat.VCatException: Error reading Wikimedia Toolforge meta information for dbname 'eswiki'
	at vcat.toolforge.base.ToolforgeWikiProvider.fromDbname(ToolforgeWikiProvider.java:36)
	at vcat.toolforge.base.AllParamsToolforge.initWiki(AllParamsToolforge.java:21)
	at vcat.toolforge.base.AllParamsToolforge.initWiki(AllParamsToolforge.java:1)
	at vcat.params.AbstractAllParams.init(AbstractAllParams.java:79)
	at vcat.toolforge.base.AllParamsToolforge.<init>(AllParamsToolforge.java:16)
	at vcat.toolforge.webapp.ToolforgeVCatServlet.renderedFileFromRequest(ToolforgeVCatServlet.java:182)
	... 25 more
Caused by: java.sql.SQLNonTransientConnectionException: (conn:87011086) Could not send query: unexpected end of stream, read 0 bytes from 4
	at org.mariadb.jdbc.internal.util.exceptions.ExceptionMapper.get(ExceptionMapper.java:156)
	at org.mariadb.jdbc.internal.util.exceptions.ExceptionMapper.getException(ExceptionMapper.java:118)
	at org.mariadb.jdbc.MariaDbStatement.executeExceptionEpilogue(MariaDbStatement.java:247)
	at org.mariadb.jdbc.MariaDbPreparedStatementClient.executeInternal(MariaDbPreparedStatementClient.java:218)
	at org.mariadb.jdbc.MariaDbPreparedStatementClient.execute(MariaDbPreparedStatementClient.java:153)
	at org.mariadb.jdbc.MariaDbPreparedStatementClient.executeQuery(MariaDbPreparedStatementClient.java:167)
	at com.mchange.v2.c3p0.impl.NewProxyPreparedStatement.executeQuery(NewProxyPreparedStatement.java:353)
	at vcat.toolforge.base.ToolforgeWikiProvider.fromDbname(ToolforgeWikiProvider.java:24)
	... 30 more
Caused by: java.sql.SQLException: Could not send query: unexpected end of stream, read 0 bytes from 4
Query is: SELECT * FROM wiki WHERE dbname=?, parameters ['eswiki']
	at org.mariadb.jdbc.internal.util.LogQueryTool.exceptionWithQuery(LogQueryTool.java:145)
	at org.mariadb.jdbc.internal.protocol.AbstractQueryProtocol.executeQuery(AbstractQueryProtocol.java:222)
	at org.mariadb.jdbc.MariaDbPreparedStatementClient.executeInternal(MariaDbPreparedStatementClient.java:212)
	... 34 more
Caused by: java.io.EOFException: unexpected end of stream, read 0 bytes from 4
	at org.mariadb.jdbc.internal.io.input.StandardPacketInputStream.getPacketArray(StandardPacketInputStream.java:246)
	at org.mariadb.jdbc.internal.io.input.StandardPacketInputStream.getPacket(StandardPacketInputStream.java:214)
	at org.mariadb.jdbc.internal.protocol.AbstractQueryProtocol.readPacket(AbstractQueryProtocol.java:1067)
	at org.mariadb.jdbc.internal.protocol.AbstractQueryProtocol.getResult(AbstractQueryProtocol.java:1048)
	at org.mariadb.jdbc.internal.protocol.AbstractQueryProtocol.executeQuery(AbstractQueryProtocol.java:219)
	... 35 more
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