cats: Getting ResponseCode 999 and log shows Fuzzer [VeryLargeUnicodeValuesInFieldsFuzzer] failed due to [java.net.ProtocolException: Unexpected status line:

I was running CATS with 1 Api and got this error response code shows 999.What does that mean?Log shows :
Exception while processing!: com.endava.cats.io.CatsIOException: java.net.ProtocolException: Unexpected status line: 62\uDCD4?\uD848\uDC6F????\uD855]...[\uDD52?\uD84A\uDE5E?\uD801\uDE64\uD808\uDEDC\uD87E\uDD85\uD81A\uDF26??\uD85D\uDF9C?\uD81F\uDC4F\uD804\uDEB5\uD865\uDF0A??\uD854\uDFC7???\uD86E\uDE22\uD84D\uDC51\uD840\uDF2B\uD862\uDC16??\uD86D\uDF89\uD835\uDFC8??\uD804\uDDAB?????\uD844\uDCEE\uD844\uDC83???\uD85C\uDDA7\uD842\uDF9B??\uD855\uDDCC?\\uD850\uDFAA\uD85B\uDE6F??\uD864\uDCF7?????\uD82C\uDE49\uD876\uDEF7\uD811\uDD6B\uD808\uDD16?\uD850\uDD65\uD800\uDF51????\uD81F\uDC62?????\uD86F\uDC16\uD872\uDEFF\uD83D\uDD85?\uD85A\uDF50\uD863\uDF05\uD85C\uDCBF\uD857\uDEF8?\uD842\uDCBE?\uD85C\uDFF7\uD86A\uDEB5??\uD848\uDFB8ts\": only \"true\" or \"false\" recognized\n at [Source: (ByteArrayInputStream); line: 1, column: 636] (through reference chain: Animal[\"land\"]->AnimalLand[\"reptiles\"]->AnimalReptiles[\"lizard\"])"}HTTP/1.1 400 Bad Request at com.endava.cats.io.ServiceCaller.call(ServiceCaller.java:214) at com.endava.cats.io.ServiceCaller_Subclass.call$$superforward1(Unknown Source) at com.endava.cats.io.ServiceCaller_Subclass$$function$$1.apply(Unknown Source) at io.quarkus.arc.impl.AroundInvokeInvocationContext.proceed(AroundInvokeInvocationContext.java:54) at com.endava.cats.aop.DryRunAspect.intercept(DryRunAspect.java:95) at com.endava.cats.aop.DryRunAspect_Bean.intercept(Unknown Source) at io.quarkus.arc.impl.InterceptorInvocation.invoke(InterceptorInvocation.java:41) at io.quarkus.arc.impl.AroundInvokeInvocationContext.perform(AroundInvokeInvocationContext.java:41) at io.quarkus.arc.impl.InvocationContexts.performAroundInvoke(InvocationContexts.java:32) at com.endava.cats.io.ServiceCaller_Subclass.call(Unknown Source) at com.endava.cats.io.ServiceCaller_ClientProxy.call(Unknown Source) at com.endava.cats.fuzzer.fields.base.BaseFieldsFuzzer.process(BaseFieldsFuzzer.java:86) at com.endava.cats.fuzzer.fields.base.BaseFieldsFuzzer.lambda$fuzz$0(BaseFieldsFuzzer.java:65) at com.endava.cats.report.TestCaseListener.createAndExecuteTest(TestCaseListener.java:109) at com.endava.cats.report.TestCaseListener_Subclass.createAndExecuteTest$$superforward1(Unknown Source) at com.endava.cats.report.TestCaseListener_Subclass$$function$$27.apply(Unknown Source) at io.quarkus.arc.impl.AroundInvokeInvocationContext.proceed(AroundInvokeInvocationContext.java:54) at com.endava.cats.aop.DryRunAspect.intercept(DryRunAspect.java:95) at com.endava.cats.aop.DryRunAspect_Bean.intercept(Unknown Source) at io.quarkus.arc.impl.InterceptorInvocation.invoke(InterceptorInvocation.java:41) at io.quarkus.arc.impl.AroundInvokeInvocationContext.perform(AroundInvokeInvocationContext.java:41) at io.quarkus.arc.impl.InvocationContexts.performAroundInvoke(InvocationContexts.java:32) at com.endava.cats.report.TestCaseListener_Subclass.createAndExecuteTest(Unknown Source) at com.endava.cats.report.TestCaseListener_ClientProxy.createAndExecuteTest(Unknown Source) at com.endava.cats.fuzzer.fields.base.BaseFieldsFuzzer.fuzz(BaseFieldsFuzzer.java:65) at com.endava.cats.command.CatsCommand.lambda$fuzzPath$6(CatsCommand.java:227) at java.base/java.util.ArrayList.forEach(ArrayList.java:1541) at com.endava.cats.command.CatsCommand.fuzzPath(CatsCommand.java:224) at com.endava.cats.command.CatsCommand.startFuzzing(CatsCommand.java:137) at com.endava.cats.command.CatsCommand.doLogic(CatsCommand.java:121) at com.endava.cats.command.CatsCommand.run(CatsCommand.java:108) at picocli.CommandLine.executeUserObject(CommandLine.java:1939) at picocli.CommandLine.access$1300(CommandLine.java:145) at picocli.CommandLine$RunLast.executeUserObjectOfLastSubcommandWithSameParent(CommandLine.java:2358) at picocli.CommandLine$RunLast.handle(CommandLine.java:2352) at picocli.CommandLine$RunLast.handle(CommandLine.java:2314) at picocli.CommandLine$AbstractParseResultHandler.execute(CommandLine.java:2179) at picocli.CommandLine$RunLast.execute(CommandLine.java:2316) at picocli.CommandLine.execute(CommandLine.java:2078) at com.endava.cats.CatsMain.run(CatsMain.java:27) at com.endava.cats.CatsMain_ClientProxy.run(Unknown Source) at io.quarkus.runtime.ApplicationLifecycleManager.run(ApplicationLifecycleManager.java:124) at io.quarkus.runtime.Quarkus.run(Quarkus.java:67) at io.quarkus.runtime.Quarkus.run(Quarkus.java:41) at io.quarkus.runner.GeneratedMain.main(Unknown Source) Caused by: java.net.ProtocolException: Unexpected status line: 62\uDCD4?\uD848\uDC6F????\uD855]...[\uDD52?\uD84A\uDE5E?\uD801\uDE64\uD808\uDEDC\uD87E\uDD85\uD81A\uDF26??\uD85D\uDF9C?\uD81F\uDC4F\uD804\uDEB5\uD865\uDF0A??\uD854\uDFC7???\uD86F\uDC16\uD872\uDEFF\uD83D\uDD85?\uD85A\uDF50\uD863\uDF05\uD85C\uDCBF\uD857\uDEF8?\uD842\uDCBE?\uD85C\uDFF7\uD86A\uDEB5??\uD848\uDFB8ts\": only \"true\" or \"false\" recognized\n at [Source: (ByteArrayInputStream); line: 1, column: 636] (through reference chain: Animal[\"land\"]->AnimalLand[\"reptiles\"]->AnimalReptiles[\"lizard\"])"}HTTP/1.1 400 Bad Request at okhttp3.internal.http.StatusLine$Companion.parse(StatusLine.kt:80) at okhttp3.internal.http1.Http1ExchangeCodec.readResponseHeaders(Http1ExchangeCodec.kt:178) at okhttp3.internal.connection.Exchange.readResponseHeaders(Exchange.kt:106) at okhttp3.internal.http.CallServerInterceptor.intercept(CallServerInterceptor.kt:79) at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:109) at okhttp3.internal.connection.ConnectInterceptor.intercept(ConnectInterceptor.kt:34) at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:109) at okhttp3.internal.cache.CacheInterceptor.intercept(CacheInterceptor.kt:95) at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:109) at okhttp3.internal.http.BridgeInterceptor.intercept(BridgeInterceptor.kt:83) at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:109) at okhttp3.internal.http.RetryAndFollowUpInterceptor.intercept(RetryAndFollowUpInterceptor.kt:76) at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:109) at okhttp3.internal.connection.RealCall.getResponseWithInterceptorChain$okhttp(RealCall.kt:201) at okhttp3.internal.connection.RealCall.execute(RealCall.kt:154) at com.endava.cats.io.ServiceCaller.callService(ServiceCaller.java:349) at com.endava.cats.io.ServiceCaller.call(ServiceCaller.java:208) ... 44 more Please provide some info on it and how to resolve this.Open Api spec attached