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javax.servlet.ServletException: vcat.VCatException: Error reading Tool Labs meta information for dbname 'frwiki'

javax.servlet.ServletException: javax.servlet.ServletException: vcat.VCatException: Error reading Tool Labs meta information for dbname 'frwiki'
	at vcat.webapp.base.AbstractVCatServlet.doRequest(AbstractVCatServlet.java:69)
	at vcat.toollabs.webapp.AbstractVCatToollabsServlet.doRequest(AbstractVCatToollabsServlet.java:22)
	at vcat.webapp.base.AbstractVCatServlet.doGet(AbstractVCatServlet.java:31)
	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 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:501)
	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:1145)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
	at java.lang.Thread.run(Thread.java:745)
Caused by: javax.servlet.ServletException: vcat.VCatException: Error reading Tool Labs meta information for dbname 'frwiki'
	at vcat.toollabs.webapp.ToollabsVCatServlet.renderedFileFromRequest(ToollabsVCatServlet.java:180)
	at vcat.webapp.base.AbstractVCatServlet.doRequest(AbstractVCatServlet.java:41)
	... 20 more
Caused by: vcat.VCatException: Error reading Tool Labs meta information for dbname 'frwiki'
	at vcat.toollabs.base.ToollabsWikiProvider.fromDbname(ToollabsWikiProvider.java:36)
	at vcat.toollabs.base.AllParamsToollabs.initWiki(AllParamsToollabs.java:21)
	at vcat.toollabs.base.AllParamsToollabs.initWiki(AllParamsToollabs.java:9)
	at vcat.params.AbstractAllParams.init(AbstractAllParams.java:79)
	at vcat.toollabs.base.AllParamsToollabs.<init>(AllParamsToollabs.java:16)
	at vcat.toollabs.webapp.ToollabsVCatServlet.renderedFileFromRequest(ToollabsVCatServlet.java:177)
	... 21 more
Caused by: java.sql.SQLNonTransientConnectionException: Could not read resultset: unexpected end of stream, read 0bytes from 4
	at org.mariadb.jdbc.internal.SQLExceptionMapper.get(SQLExceptionMapper.java:136)
	at org.mariadb.jdbc.internal.SQLExceptionMapper.throwException(SQLExceptionMapper.java:106)
	at org.mariadb.jdbc.MySQLStatement.executeQueryEpilog(MySQLStatement.java:264)
	at org.mariadb.jdbc.MySQLStatement.execute(MySQLStatement.java:288)
	at org.mariadb.jdbc.MySQLStatement.executeQuery(MySQLStatement.java:302)
	at org.mariadb.jdbc.MySQLPreparedStatement.executeQuery(MySQLPreparedStatement.java:112)
	at com.mchange.v2.c3p0.impl.NewProxyPreparedStatement.executeQuery(NewProxyPreparedStatement.java:1418)
	at vcat.toollabs.base.ToollabsWikiProvider.fromDbname(ToollabsWikiProvider.java:24)
	... 26 more
Caused by: org.mariadb.jdbc.internal.common.QueryException: Could not read resultset: unexpected end of stream, read 0bytes from 4
	at org.mariadb.jdbc.internal.mysql.MySQLProtocol.getResult(MySQLProtocol.java:926)
	at org.mariadb.jdbc.internal.mysql.MySQLProtocol.executeQuery(MySQLProtocol.java:991)
	at org.mariadb.jdbc.MySQLStatement.execute(MySQLStatement.java:281)
	... 30 more
Caused by: java.io.EOFException: unexpected end of stream, read 0bytes from 4
	at org.mariadb.jdbc.internal.common.packet.buffer.ReadUtil.readFully(ReadUtil.java:84)
	at org.mariadb.jdbc.internal.common.packet.buffer.ReadUtil.readFully(ReadUtil.java:92)
	at org.mariadb.jdbc.internal.common.packet.RawPacket.nextPacket(RawPacket.java:77)
	at org.mariadb.jdbc.internal.common.packet.SyncPacketFetcher.getRawPacket(SyncPacketFetcher.java:67)
	at org.mariadb.jdbc.internal.mysql.MySQLProtocol.getResult(MySQLProtocol.java:894)
	... 32 more
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