Freemarker URL directive is broken.

Just a heads up. Not sure if this is happening on other communities.

{ "error":"
FreeMarker template error:
To do URL encoding, the framework that encloses FreeMarker must specify the output encoding or the URL encoding charset, so ask the programmers to fix it. Or, as a last chance, you can set the url_encoding_charset setting in the template, e.g. <#setting url_escaping_charset='ISO-8859-1'>, or give the charset explicitly to the buit-in, e.g. foo?url('ISO-8859-1').

The failing instruction (FTL stack trace):
----------
==> ${q?url}  [in template "api_search.ftl" at line 13, column 79]
    #assign url = "\${url}?restapi.respon...  [in template "api_search.ftl" at line 13, column 1]
----------

Java stack trace (for programmers):
----------
freemarker.core._TemplateModelException: [... Exception message was already printed; see it above ...]
	at freemarker.core.StringBuiltins$urlBI$urlBIResult.getAsString(StringBuiltins.java:323)
	at freemarker.core.EvalUtil.modelToString(EvalUtil.java:91)
	at freemarker.core.EvalUtil.coerceModelToString(EvalUtil.java:376)
	at freemarker.core.Expression.evalAndCoerceToString(Expression.java:115)
	at freemarker.core.DollarVariable.accept(DollarVariable.java:76)
	at freemarker.core.Environment.visit(Environment.java:265)
	at freemarker.core.MixedContent.accept(MixedContent.java:93)
	at freemarker.core.Environment.visit(Environment.java:265)
	at freemarker.core.Environment.renderElementToString(Environment.java:1798)
	at freemarker.core.StringLiteral.evalAndCoerceToString(StringLiteral.java:116)
	at freemarker.core.StringLiteral._eval(StringLiteral.java:93)
	at freemarker.core.Expression.eval(Expression.java:111)
	at freemarker.core.Assignment.accept(Assignment.java:106)
	at freemarker.core.Environment.visit(Environment.java:265)
	at freemarker.core.MixedContent.accept(MixedContent.java:93)
	at freemarker.core.Environment.visit(Environment.java:265)
	at freemarker.core.Environment.process(Environment.java:243)
	at freemarker.template.Template.process(Template.java:277)
	at org.springframework.web.servlet.view.freemarker.FreeMarkerView.processTemplate(FreeMarkerView.java:366)
	at org.springframework.web.servlet.view.freemarker.FreeMarkerView.doRender(FreeMarkerView.java:283)
	at org.springframework.web.servlet.view.freemarker.FreeMarkerView.renderMergedTemplateModel(FreeMarkerView.java:233)
	at org.springframework.web.servlet.view.AbstractTemplateView.renderMergedOutputModel(AbstractTemplateView.java:167)
	at org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:263)
	at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1208)
	at org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:992)
	at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:939)
	at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:856)
	at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:936)
	at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:827)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
	at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:812)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
	at lithium.servlet.spring.SpringControllerDispatcherServlet.service(SpringControllerDispatcherServlet.java:89)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
	at lithium.util.http.DelegatingApplicationServletProxy.service(DelegatingApplicationServletProxy.java:223)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at lithium.servlet.JsonCallbackFilter.doHttpFilter(JsonCallbackFilter.java:49)
	at lithium.util.http.HttpFilter.doFilter(HttpFilter.java:44)
	at lithium.util.http.DelegatingApplicationFilterProxy.doFilter(DelegatingApplicationFilterProxy.java:184)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at lithium.webui.CustomPageInitializationHttpFilter.doHttpFilter(CustomPageInitializationHttpFilter.java:90)
	at lithium.util.http.HttpFilter.doFilter(HttpFilter.java:44)
	at lithium.util.http.DelegatingApplicationFilterProxy.doFilter(DelegatingApplicationFilterProxy.java:184)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at lithium.fusion.FusionServlet.doHttpFilter(FusionServlet.java:227)
	at lithium.util.http.HttpFilter.doFilter(HttpFilter.java:44)
	at lithium.util.http.DelegatingApplicationFilterProxy.doFilter(DelegatingApplicationFilterProxy.java:184)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at lithium.servlet.HttpRequestContextFilter.doHttpFilter(HttpRequestContextFilter.java:77)
	at lithium.util.http.HttpFilter.doFilter(HttpFilter.java:44)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at lithium.servlet.MaskedIpFilter.doHttpFilter(MaskedIpFilter.java:102)
	at lithium.util.http.HttpFilter.doFilter(HttpFilter.java:44)
	at lithium.util.http.DelegatingApplicationFilterProxy.doFilter(DelegatingApplicationFilterProxy.java:184)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at lithium.servlet.HashedIpFilter.doHttpFilter(HashedIpFilter.java:180)
	at lithium.util.http.HttpFilter.doFilter(HttpFilter.java:44)
	at lithium.util.http.DelegatingApplicationFilterProxy.doFilter(DelegatingApplicationFilterProxy.java:184)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at lithium.servlet.device.ClientDeviceDetectionFilter.doHttpFilter(ClientDeviceDetectionFilter.java:198)
	at lithium.util.http.HttpFilter.doFilter(HttpFilter.java:44)
	at lithium.util.http.DelegatingApplicationFilterProxy.doFilter(DelegatingApplicationFilterProxy.java:184)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at lithium.boards.servlet.pagecache.PageCacheManager.doHttpFilter(PageCacheManager.java:416)
	at lithium.boards.servlet.pagecache.PageCacheFilter.doHttpFilter(PageCacheFilter.java:42)
	at lithium.util.http.HttpFilter.doFilter(HttpFilter.java:44)
	at lithium.util.http.DelegatingApplicationFilterProxy.doFilter(DelegatingApplicationFilterProxy.java:184)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at lithium.servlet.banuser.BannedUserFilter.doHttpFilter(BannedUserFilter.java:129)
	at lithium.util.http.HttpFilter.doFilter(HttpFilter.java:44)
	at lithium.util.http.DelegatingApplicationFilterProxy.doFilter(DelegatingApplicationFilterProxy.java:184)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at lithium.web.clickjacking.ClickjackingServletFilter.doHttpFilter(ClickjackingServletFilter.java:125)
	at lithium.util.http.HttpFilter.doFilter(HttpFilter.java:44)
	at lithium.util.http.DelegatingApplicationFilterProxy.doFilter(DelegatingApplicationFilterProxy.java:184)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at lithium.traffic.visitor.VisitorFilter.doHttpFilter(VisitorFilter.java:42)
	at lithium.util.http.HttpFilter.doFilter(HttpFilter.java:44)
	at lithium.util.http.DelegatingApplicationFilterProxy.doFilter(DelegatingApplicationFilterProxy.java:184)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at lithium.servlet.session.UserSessionFilter.doHttpFilter(UserSessionFilter.java:162)
	at lithium.util.http.HttpFilter.doFilter(HttpFilter.java:44)
	at lithium.util.http.DelegatingApplicationFilterProxy.doFilter(DelegatingApplicationFilterProxy.java:184)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at lithium.servlet.xsl.PluginXslTransformFilter.doHttpFilter(PluginXslTransformFilter.java:76)
	at lithium.util.http.HttpFilter.doFilter(HttpFilter.java:44)
	at lithium.util.http.DelegatingApplicationFilterProxy.doFilter(DelegatingApplicationFilterProxy.java:184)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at lithium.servlet.MimeFilter.doHttpFilter(MimeFilter.java:37)
	at lithium.util.http.HttpFilter.doFilter(HttpFilter.java:44)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at lithium.servlet.limit.StandardLimitPool.processRequest(StandardLimitPool.java:539)
	at lithium.servlet.limit.StandardLimitManager.processRequest(StandardLimitManager.java:184)
	at lithium.servlet.limit.LimitFilter.doHttpFilter(LimitFilter.java:67)
	at lithium.util.http.HttpFilter.doFilter(HttpFilter.java:44)
	at lithium.util.http.DelegatingApplicationFilterProxy.doFilter(DelegatingApplicationFilterProxy.java:184)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at lithium.servlet.RequestTransformFilter.doHttpFilter(RequestTransformFilter.java:73)
	at lithium.util.http.HttpFilter.doFilter(HttpFilter.java:44)
	at lithium.util.http.DelegatingApplicationFilterProxy.doFilter(DelegatingApplicationFilterProxy.java:184)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at lithium.servlet.MetricsFilter.doHttpFilter(MetricsFilter.java:95)
	at lithium.util.http.HttpFilter.doFilter(HttpFilter.java:44)
	at lithium.util.http.DelegatingApplicationFilterProxy.doFilter(DelegatingApplicationFilterProxy.java:184)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at lithium.servlet.SetHeaderValidationFilter.doHttpFilter(SetHeaderValidationFilter.java:52)
	at lithium.util.http.HttpFilter.doFilter(HttpFilter.java:44)
	at lithium.util.http.DelegatingApplicationFilterProxy.doFilter(DelegatingApplicationFilterProxy.java:184)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at lithium.servlet.SessionIdStripperFilter.doHttpFilter(SessionIdStripperFilter.java:44)
	at lithium.util.http.HttpFilter.doFilter(HttpFilter.java:44)
	at lithium.util.http.DelegatingApplicationFilterProxy.doFilter(DelegatingApplicationFilterProxy.java:184)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at lithium.servlet.device.AgentDetectionFilter.doHttpFilter(AgentDetectionFilter.java:111)
	at lithium.util.http.HttpFilter.doFilter(HttpFilter.java:44)
	at lithium.util.http.DelegatingApplicationFilterProxy.doFilter(DelegatingApplicationFilterProxy.java:184)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at lithium.servlet.session.ReplicatedSessionFilter.doFilter(ReplicatedSessionFilter.java:57)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at lithium.servlet.rewrite.RewriteFilter.doHttpFilter(RewriteFilter.java:410)
	at lithium.util.http.HttpFilter.doFilter(HttpFilter.java:44)
	at lithium.util.http.DelegatingApplicationFilterProxy.doFilter(DelegatingApplicationFilterProxy.java:184)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at lithium.servlet.BlackboxFilter.doHttpFilter(BlackboxFilter.java:88)
	at lithium.util.http.HttpFilter.doFilter(HttpFilter.java:44)
	at lithium.util.http.DelegatingApplicationFilterProxy.doFilter(DelegatingApplicationFilterProxy.java:184)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at lithium.servlet.OperationsLoggingFilter.doHttpFilter(OperationsLoggingFilter.java:106)
	at lithium.util.http.HttpFilter.doFilter(HttpFilter.java:44)
	at lithium.util.http.DelegatingApplicationFilterProxy.doFilter(DelegatingApplicationFilterProxy.java:184)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at lithium.servlet.tracking.TrackingManager.doHttpFilter(TrackingManager.java:270)
	at lithium.servlet.tracking.TrackingFilter.doHttpFilter(TrackingFilter.java:25)
	at lithium.util.http.HttpFilter.doFilter(HttpFilter.java:44)
	at lithium.util.http.DelegatingApplicationFilterProxy.doFilter(DelegatingApplicationFilterProxy.java:184)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at lithium.servlet.AccessCheckFilter.doHttpFilter(AccessCheckFilter.java:75)
	at lithium.util.http.HttpFilter.doFilter(HttpFilter.java:44)
	at lithium.util.http.DelegatingApplicationFilterProxy.doFilter(DelegatingApplicationFilterProxy.java:184)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at lithium.util.servlet.P3PHeaderFilter.doHttpFilter(P3PHeaderFilter.java:80)
	at lithium.util.http.HttpFilter.doFilter(HttpFilter.java:44)
	at lithium.util.http.DelegatingApplicationFilterProxy.doFilter(DelegatingApplicationFilterProxy.java:184)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at lithium.util.http.GenericFilter.doHttpFilter(GenericFilter.java:21)
	at lithium.util.http.HttpFilter.doFilter(HttpFilter.java:44)
	at lithium.util.http.DelegatingApplicationFilterProxy.doFilter(DelegatingApplicationFilterProxy.java:184)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at lithium.servlet.VanityHostnameRedirectFilter.doHttpFilter(VanityHostnameRedirectFilter.java:79)
	at lithium.util.http.HttpFilter.doFilter(HttpFilter.java:44)
	at lithium.util.http.DelegatingApplicationFilterProxy.doFilter(DelegatingApplicationFilterProxy.java:184)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at lithium.servlet.CanonicalIpFilter.doHttpFilter(CanonicalIpFilter.java:50)
	at lithium.util.http.HttpFilter.doFilter(HttpFilter.java:44)
	at lithium.util.http.DelegatingApplicationFilterProxy.doFilter(DelegatingApplicationFilterProxy.java:184)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at lithium.servlet.ForwardedHeadersFilter.doHttpFilter(ForwardedHeadersFilter.java:227)
	at lithium.util.http.HttpFilter.doFilter(HttpFilter.java:44)
	at lithium.util.http.DelegatingApplicationFilterProxy.doFilter(DelegatingApplicationFilterProxy.java:184)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at lithium.servlet.funnel.FunnelManager.doHttpFilter(FunnelManager.java:91)
	at lithium.servlet.funnel.FunnelFilter.doHttpFilter(FunnelFilter.java:41)
	at lithium.util.http.HttpFilter.doFilter(HttpFilter.java:44)
	at lithium.util.http.DelegatingApplicationFilterProxy.doFilter(DelegatingApplicationFilterProxy.java:184)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at lithium.apps.main.container.filters.ApplicationSelectorFilter.doHttpFilter(ApplicationSelectorFilter.java:176)
	at lithium.util.http.HttpFilter.doFilter(HttpFilter.java:44)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at lithium.boards.servlet.ClearStateFilter.doHttpFilter(ClearStateFilter.java:64)
	at lithium.util.http.HttpFilter.doFilter(HttpFilter.java:44)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at lithium.servlet.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:57)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
	at lithium.apps.main.webserver.Tomcat70Bootstrap$3.invoke(Tomcat70Bootstrap.java:394)
	at lithium.apps.main.webserver.Tomcat70Bootstrap$2.invoke(Tomcat70Bootstrap.java:347)
	at lithium.apps.main.webserver.SessionIdValidator.invoke(SessionIdValidator.java:107)
	at lithium.apps.main.webserver.ApplicationWebserverConfigurationValve.invoke(ApplicationWebserverConfigurationValve.java:69)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
	at org.apache.coyote.ajp.AjpProcessor.process(AjpProcessor.java:200)
	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
	at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
	at java.lang.Thread.run(Thread.java:744)
" }