javax.script.ScriptException: TypeError: html.indexOf is not a function in <eval> at line number 7
	at jdk.scripting.nashorn/jdk.nashorn.api.scripting.NashornScriptEngine.throwAsScriptException(NashornScriptEngine.java:477)
	at jdk.scripting.nashorn/jdk.nashorn.api.scripting.NashornScriptEngine.invokeImpl(NashornScriptEngine.java:399)
	at jdk.scripting.nashorn/jdk.nashorn.api.scripting.NashornScriptEngine.invokeFunction(NashornScriptEngine.java:197)
	at org.noear.luffy.executor.s.javascript.JavascriptJtExecutor.exec(JavascriptJtExecutor.java:192)
	at org.noear.luffy.executor.ExecutorEntity.exec(ExecutorEntity.java:30)
	at org.noear.luffy.executor.ExecutorFactory.call(ExecutorFactory.java:198)
	at org.noear.luffy.executor.ExecutorFactory.exec(ExecutorFactory.java:108)
	at org.noear.luffy.event.http.AppHandler.do_handle(AppHandler.java:88)
	at org.noear.luffy.event.http.AppHandler.handle(AppHandler.java:33)
	at org.noear.solon.core.route.RouterHandler.handleMain(RouterHandler.java:49)
	at org.noear.solon.core.route.RouterHandler.handleDo(RouterHandler.java:86)
	at org.noear.solon.core.route.RouterHandler.doIntercept(RouterHandler.java:40)
	at org.noear.solon.core.route.RouterInterceptorLimiter.doIntercept(RouterInterceptorLimiter.java:65)
	at org.noear.solon.core.route.RouterInterceptorChainImpl.doIntercept(RouterInterceptorChainImpl.java:42)
	at org.noear.solon.core.ChainManager.doIntercept(ChainManager.java:194)
	at org.noear.solon.core.route.RouterHandler.handle(RouterHandler.java:115)
	at org.noear.solon.core.handle.HandlerPipeline.handle(HandlerPipeline.java:53)
	at org.noear.solon.core.handle.HandlerPipeline.handle(HandlerPipeline.java:53)
	at org.noear.solon.SolonApp.doFilter(SolonApp.java:530)
	at org.noear.solon.core.handle.FilterChainImpl.doFilter(FilterChainImpl.java:48)
	at org.noear.solon.core.ChainManager.doFilter(ChainManager.java:101)
	at org.noear.solon.SolonApp.tryHandle(SolonApp.java:467)
	at org.noear.solon.boot.smarthttp.http.SmHttpContextHandler.handleDo(SmHttpContextHandler.java:125)
	at org.noear.solon.boot.smarthttp.http.SmHttpContextHandler.handle0(SmHttpContextHandler.java:103)
	at org.noear.solon.boot.smarthttp.http.SmHttpContextHandler.lambda$handle$0(SmHttpContextHandler.java:88)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
	at java.base/java.lang.Thread.run(Thread.java:834)
Caused by: <eval>:7 TypeError: html.indexOf is not a function
	at jdk.scripting.nashorn/jdk.nashorn.internal.runtime.ECMAErrors.error(ECMAErrors.java:57)
	at jdk.scripting.nashorn/jdk.nashorn.internal.runtime.ECMAErrors.typeError(ECMAErrors.java:213)
	at jdk.scripting.nashorn/jdk.nashorn.internal.runtime.ECMAErrors.typeError(ECMAErrors.java:185)
	at jdk.scripting.nashorn/jdk.nashorn.internal.runtime.ECMAErrors.typeError(ECMAErrors.java:172)
	at jdk.scripting.nashorn/jdk.nashorn.internal.runtime.Undefined.lookup(Undefined.java:100)
	at jdk.scripting.nashorn/jdk.nashorn.internal.runtime.linker.NashornLinker.getGuardedInvocation(NashornLinker.java:106)
	at jdk.scripting.nashorn/jdk.nashorn.internal.runtime.linker.NashornLinker.getGuardedInvocation(NashornLinker.java:96)
	at jdk.dynalink/jdk.dynalink.linker.support.CompositeTypeBasedGuardingDynamicLinker.getGuardedInvocation(CompositeTypeBasedGuardingDynamicLinker.java:161)
	at jdk.dynalink/jdk.dynalink.linker.support.CompositeGuardingDynamicLinker.getGuardedInvocation(CompositeGuardingDynamicLinker.java:109)
	at jdk.dynalink/jdk.dynalink.LinkerServicesImpl.lambda$getGuardedInvocation$0(LinkerServicesImpl.java:137)
	at jdk.dynalink/jdk.dynalink.LinkerServicesImpl.getWithLookupInternal(LinkerServicesImpl.java:168)
	at jdk.dynalink/jdk.dynalink.LinkerServicesImpl.getGuardedInvocation(LinkerServicesImpl.java:135)
	at jdk.dynalink/jdk.dynalink.DynamicLinker.relink(DynamicLinker.java:242)
	at jdk.scripting.nashorn.scripts/jdk.nashorn.internal.scripts.Script$Recompilation$469$22A$\^eval\_.API___article___(<eval>:7)
	at jdk.scripting.nashorn/jdk.nashorn.internal.runtime.ScriptFunctionData.invoke(ScriptFunctionData.java:657)
	at jdk.scripting.nashorn/jdk.nashorn.internal.runtime.ScriptFunction.invoke(ScriptFunction.java:513)
	at jdk.scripting.nashorn/jdk.nashorn.internal.runtime.ScriptRuntime.apply(ScriptRuntime.java:527)
	at jdk.scripting.nashorn.scripts/jdk.nashorn.internal.scripts.Script$Recompilation$93$1075A$\^eval\_.API_RUN(<eval>:12)
	at jdk.scripting.nashorn/jdk.nashorn.internal.runtime.ScriptFunctionData.invoke(ScriptFunctionData.java:657)
	at jdk.scripting.nashorn/jdk.nashorn.internal.runtime.ScriptFunction.invoke(ScriptFunction.java:513)
	at jdk.scripting.nashorn/jdk.nashorn.internal.runtime.ScriptRuntime.apply(ScriptRuntime.java:527)
	at jdk.scripting.nashorn/jdk.nashorn.api.scripting.ScriptObjectMirror.callMember(ScriptObjectMirror.java:202)
	at jdk.scripting.nashorn/jdk.nashorn.api.scripting.NashornScriptEngine.invokeImpl(NashornScriptEngine.java:393)
	... 26 more