Java Stacktrace after klicking on a kite-spot

[Former user]

I currently got the following Java Stacktrace after klicking on any kite-spot:

Syntax Error, invalid Expression [Connection Failure]
    at railo.runtime.interpreter.CFMLExpressionInterpreter.interpret(CFMLExpressionInterpreter.java:217):217
    at railo.runtime.interpreter.CFMLExpressionInterpreter.interpret(CFMLExpressionInterpreter.java:187):187
    at railo.runtime.functions.conversion.DeserializeJSON.call(DeserializeJSON.java:49):49
    at railo.runtime.functions.conversion.DeserializeJSON.call(DeserializeJSON.java:46):46
    at kitespot_show_cfm$cf.call(/home/railo/kitewiese/kitespot_show.cfm:56):56
    at railo.runtime.PageContextImpl.doInclude(PageContextImpl.java:925):925
    at railo.runtime.listener.ClassicAppListener._onRequest(ClassicAppListener.java:55):55
    at railo.runtime.listener.MixedAppListener.onRequest(MixedAppListener.java:35):35
    at railo.runtime.PageContextImpl.execute(PageContextImpl.java:2228):2228
    at railo.runtime.PageContextImpl.execute(PageContextImpl.java:2195):2195
    at railo.runtime.engine.CFMLEngineImpl.serviceCFML(CFMLEngineImpl.java:347):347
    at railo.loader.servlet.CFMLServlet.service(CFMLServlet.java:29):29
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:728):728
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305):305
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210):210
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222):222
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123):123
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472):472
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171):171
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99):99
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118):118
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407):407
    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1004):1004
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589):589
    at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310):310
    at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source):-1
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source):-1
    at java.lang.Thread.run(Unknown Source):-1

for example: http://www.kitewiese.de/kitespot_show.cfm?kitespotid=315&zoomlevel=11&centerpoint=(49.3987524,%208.672433500000011