Plz fix bug for java 11

[vuminhngoc]

when i config java 11, have a error:
16:11:18.682 [executor60] ERROR org.rapidoid.http.impl.lowlevel.LowLevelHttpIO - Error occurred when handling request! | error = java.lang.RuntimeException: Error while retrieving view: 404
java.lang.RuntimeException: Error while retrieving view: 404
at org.rapidoid.u.U.rte(U.java:427)
at org.rapidoid.http.impl.ResponseRenderer.renderView(ResponseRenderer.java:117)
at org.rapidoid.http.impl.ResponseRenderer.renderMvc(ResponseRenderer.java:57)
at org.rapidoid.http.impl.BodyRenderer.createRespBodyFromResult(BodyRenderer.java:67)
at org.rapidoid.http.impl.BodyRenderer.toRespBody(BodyRenderer.java:41)
at org.rapidoid.http.impl.ReqImpl.renderResponse(ReqImpl.java:569)
at org.rapidoid.http.impl.ReqImpl.renderResponseOrError(ReqImpl.java:549)
at org.rapidoid.http.impl.ReqImpl.onDone(ReqImpl.java:524)
at org.rapidoid.http.impl.ReqImpl.done(ReqImpl.java:510)
at org.rapidoid.http.impl.lowlevel.LowLevelHttpIO$1.run(LowLevelHttpIO.java:231)
at org.rapidoid.job.PredefinedContextJobWrapper.run(PredefinedContextJobWrapper.java:56)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
at java.base/java.lang.Thread.run(Thread.java:834)
Caused by: java.lang.RuntimeException: Couldn't recalculate the cache value!
at org.rapidoid.u.U.rte(U.java:427)
at org.rapidoid.cache.impl.ConcurrentCacheAtom.retrieveCachedValue(ConcurrentCacheAtom.java:163)
at org.rapidoid.cache.impl.ConcurrentCacheAtom.get(ConcurrentCacheAtom.java:64)
at org.rapidoid.cache.impl.ConcurrentCache.get(ConcurrentCache.java:153)
at org.rapidoid.render.RapidoidTemplateFactory.load(RapidoidTemplateFactory.java:66)
at org.rapidoid.http.customize.defaults.DefaultViewResolver.getView(DefaultViewResolver.java:49)
at org.rapidoid.http.impl.ResponseRenderer.renderView(ResponseRenderer.java:115)
... 12 more
Caused by: java.lang.RuntimeException:
at org.rapidoid.u.U.rte(U.java:427)
at org.rapidoid.u.U.rte(U.java:431)
at org.rapidoid.render.TemplateCompiler.compile(TemplateCompiler.java:49)
at org.rapidoid.render.XNode.compile(XNode.java:63)
at org.rapidoid.render.XNode.compile(XNode.java:67)
at org.rapidoid.render.RapidoidTemplateFactory.loadTemplate(RapidoidTemplateFactory.java:83)
at org.rapidoid.render.RapidoidTemplateFactory.loadAndCompile(RapidoidTemplateFactory.java:40)
at org.rapidoid.render.RapidoidTemplateFactory$1.map(RapidoidTemplateFactory.java:54)
at org.rapidoid.render.RapidoidTemplateFactory$1.map(RapidoidTemplateFactory.java:51)
at org.rapidoid.cache.impl.ConcurrentCacheAtom.retrieveCachedValue(ConcurrentCacheAtom.java:130)
... 17 more
Caused by: javassist.NotFoundException: org.rapidoid.render.TemplateRenderer
at javassist.ClassPool.get(ClassPool.java:450)
at org.rapidoid.render.TemplateCompiler.tryToCompile(TemplateCompiler.java:60)
at org.rapidoid.render.TemplateCompiler.compile(TemplateCompiler.java:46)
... 24 more

Many thanks!