I am creating a webclient connection for calling my webservices but each time i am getting the below exception

org.springframework.web.reactive.function.client.WebClientRequestException: No such host is known (http:); nested exception is java.net.UnknownHostException: No such host is known (http:)
at org.springframework.web.reactive.function.client.ExchangeFunctions$DefaultExchangeFunction.lambda$wrapException$9(ExchangeFunctions.java:141)
    Suppressed: reactor.core.publisher.FluxOnAssembly$OnAssemblyException: 
Error has been observed at the following site(s):
    *__checkpoint ⇢ Request to GET http:/localhost:8080/client.svc/ClientAcctRoles%3F$filter=clId%20eq%20'00100000000000070879479'%20and%20clCtx%20eq%20'COLA.CL' [DefaultWebClient]
Original Stack Trace:
        at org.springframework.web.reactive.function.client.ExchangeFunctions$DefaultExchangeFunction.lambda$wrapException$9(ExchangeFunctions.java:141)
        at reactor.core.publisher.MonoErrorSupplied.subscribe(MonoErrorSupplied.java:55)
        at reactor.core.publisher.Mono.subscribe(Mono.java:4400)
        at reactor.core.publisher.FluxOnErrorResume$ResumeSubscriber.onError(FluxOnErrorResume.java:103)
        at reactor.core.publisher.FluxPeek$PeekSubscriber.onError(FluxPeek.java:222)
        at reactor.core.publisher.FluxPeek$PeekSubscriber.onError(FluxPeek.java:222)
        at reactor.core.publisher.FluxPeek$PeekSubscriber.onError(FluxPeek.java:222)
        at reactor.core.publisher.MonoNext$NextSubscriber.onError(MonoNext.java:93)
        at reactor.core.publisher.MonoFlatMapMany$FlatMapManyMain.onError(MonoFlatMapMany.java:204)
        at reactor.core.publisher.SerializedSubscriber.onError(SerializedSubscriber.java:124)
        at reactor.core.publisher.FluxRetryWhen$RetryWhenMainSubscriber.whenError(FluxRetryWhen.java:225)
        at reactor.core.publisher.FluxRetryWhen$RetryWhenOtherSubscriber.onError(FluxRetryWhen.java:274)
        at reactor.core.publisher.FluxConcatMap$ConcatMapImmediate.drain(FluxConcatMap.java:415)
        at reactor.core.publisher.FluxConcatMap$ConcatMapImmediate.onNext(FluxConcatMap.java:251)
        at reactor.core.publisher.EmitterProcessor.drain(EmitterProcessor.java:491)
        at reactor.core.publisher.EmitterProcessor.tryEmitNext(EmitterProcessor.java:299)
        at reactor.core.publisher.SinkManySerialized.tryEmitNext(SinkManySerialized.java:100)
        at reactor.core.publisher.InternalManySink.emitNext(InternalManySink.java:27)
        at reactor.core.publisher.FluxRetryWhen$RetryWhenMainSubscriber.onError(FluxRetryWhen.java:190)
        at reactor.core.publisher.MonoCreate$DefaultMonoSink.error(MonoCreate.java:201)
        at reactor.netty.http.client.HttpClientConnect$MonoHttpConnect$ClientTransportSubscriber.onError(HttpClientConnect.java:307)
        at reactor.core.publisher.MonoCreate$DefaultMonoSink.error(MonoCreate.java:201)
        at reactor.netty.resources.DefaultPooledConnectionProvider$DisposableAcquire.onError(DefaultPooledConnectionProvider.java:158)
        at reactor.netty.internal.shaded.reactor.pool.AbstractPool$Borrower.fail(AbstractPool.java:477)
        at reactor.netty.internal.shaded.reactor.pool.SimpleDequePool.lambda$drainLoop$9(SimpleDequePool.java:431)
        at reactor.core.publisher.FluxDoOnEach$DoOnEachSubscriber.onError(FluxDoOnEach.java:186)
        at reactor.core.publisher.MonoCreate$DefaultMonoSink.error(MonoCreate.java:201)
        at reactor.netty.resources.DefaultPooledConnectionProvider$PooledConnectionAllocator$PooledConnectionInitializer.onError(DefaultPooledConnectionProvider.java:548)
        at reactor.core.publisher.MonoFlatMap$FlatMapMain.secondError(MonoFlatMap.java:192)
        at reactor.core.publisher.MonoFlatMap$FlatMapInner.onError(MonoFlatMap.java:259)
        at reactor.core.publisher.FluxOnErrorResume$ResumeSubscriber.onError(FluxOnErrorResume.java:106)
        at reactor.core.publisher.Operators.error(Operators.java:198)
        at reactor.core.publisher.MonoError.subscribe(MonoError.java:53)
        at reactor.core.publisher.Mono.subscribe(Mono.java:4400)
        at reactor.core.publisher.FluxOnErrorResume$ResumeSubscriber.onError(FluxOnErrorResume.java:103)
        at reactor.core.publisher.Operators.error(Operators.java:198)
        at reactor.core.publisher.MonoError.subscribe(MonoError.java:53)
        at reactor.core.publisher.InternalMonoOperator.subscribe(InternalMonoOperator.java:64)
        at reactor.core.publisher.MonoFlatMap$FlatMapMain.onNext(MonoFlatMap.java:157)
        at reactor.netty.transport.TransportConnector$MonoChannelPromise._subscribe(TransportConnector.java:596)
        at reactor.netty.transport.TransportConnector$MonoChannelPromise.lambda$subscribe$0(TransportConnector.java:516)
        at io.netty.util.concurrent.AbstractEventExecutor.runTask$$$capture(AbstractEventExecutor.java:174)
        at io.netty.util.concurrent.AbstractEventExecutor.runTask(AbstractEventExecutor.java)
        at io.netty.util.concurrent.AbstractEventExecutor.safeExecute$$$capture(AbstractEventExecutor.java:167)
        at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java)
        at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:470)
        at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:503)
        at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:995)
        at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
        at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
        at java.base/java.lang.Thread.run(Thread.java:833)
    Suppressed: java.lang.Exception: #block terminated with an error
        at reactor.core.publisher.BlockingSingleSubscriber.blockingGet(BlockingSingleSubscriber.java:99)
        at reactor.core.publisher.Mono.block(Mono.java:1707)
        at com.ameriprise.drp.fumigo.datasource.fumigo.Http2DataSource.getRestODataResponse(Http2DataSource.java:241)
        at com.ameriprise.drp.fumigo.datasource.fumigo.Http2DataSource.lambda$processRequest$2(Http2DataSource.java:173)
        at com.ameriprise.drp.fumigo.util.ExceptionUtil.lambda$rethrowSupplier$1(ExceptionUtil.java:66)
        at reactor.core.publisher.MonoSupplier.subscribe(MonoSupplier.java:57)
        at reactor.core.publisher.Mono.subscribe(Mono.java:4400)
        at reactor.core.publisher.Mono.subscribeWith(Mono.java:4515)
        at reactor.core.publisher.Mono.toFuture(Mono.java:4920)
        at com.ameriprise.drp.fumigo.datasource.fumigo.Http2DataSource.processRequest(Http2DataSource.java:174)
        at com.ameriprise.drp.fumigo.datasource.fumigo.FumigoDataSource.processRequest(FumigoDataSource.java:334)
        at com.ameriprise.drp.fumigo.datasource.fumigo.FailsafeFumigoDataSource.lambda$getStrategy$0(FailsafeFumigoDataSource.java:89)
        at io.github.resilience4j.retry.Retry.lambda$decorateCallable$5(Retry.java:306)
        at io.github.resilience4j.circuitbreaker.CircuitBreaker.lambda$decorateCallable$3(CircuitBreaker.java:171)
        at io.github.resilience4j.core.CallableUtils.lambda$andThen$1(CallableUtils.java:61)
        at com.ameriprise.drp.fumigo.resilience.resilience.CommonResilienceStrategy.execute(CommonResilienceStrategy.java:95)
        at com.ameriprise.drp.fumigo.datasource.fumigo.FailsafeFumigoDataSource.lambda$getStrategy$2(FailsafeFumigoDataSource.java:88)
        at com.ameriprise.drp.fumigo.util.ExceptionUtil.lambda$rethrowSupplier$1(ExceptionUtil.java:66)
        at java.base/java.util.concurrent.CompletableFuture$AsyncSupply.run$$$capture(CompletableFuture.java:1768)
        at java.base/java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java)
        at java.base/java.util.concurrent.CompletableFuture$AsyncSupply.exec(CompletableFuture.java:1760)
        at java.base/java.util.concurrent.ForkJoinTask.doExec$$$capture(ForkJoinTask.java:373)
        at java.base/java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java)
        at java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1182)
        at java.base/java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1655)
        at java.base/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1622)
        at java.base/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:165)
    Suppressed: java.lang.Exception: #block terminated with an error
        at reactor.core.publisher.BlockingSingleSubscriber.blockingGet(BlockingSingleSubscriber.java:139)
        at reactor.core.publisher.Mono.block(Mono.java:1731)
        at com.ameriprise.drp.fumigo.datasource.fumigo.FumigoDataSource.processRequest(FumigoDataSource.java:335)
        at com.ameriprise.drp.fumigo.datasource.fumigo.FailsafeFumigoDataSource.lambda$getStrategy$0(FailsafeFumigoDataSource.java:89)
        at io.github.resilience4j.retry.Retry.lambda$decorateCallable$5(Retry.java:306)
        at io.github.resilience4j.circuitbreaker.CircuitBreaker.lambda$decorateCallable$3(CircuitBreaker.java:171)
        at io.github.resilience4j.core.CallableUtils.lambda$andThen$1(CallableUtils.java:61)
        at com.ameriprise.drp.fumigo.resilience.resilience.CommonResilienceStrategy.execute(CommonResilienceStrategy.java:95)
        at com.ameriprise.drp.fumigo.datasource.fumigo.FailsafeFumigoDataSource.lambda$getStrategy$2(FailsafeFumigoDataSource.java:88)
        at com.ameriprise.drp.fumigo.util.ExceptionUtil.lambda$rethrowSupplier$1(ExceptionUtil.java:66)
        at java.base/java.util.concurrent.CompletableFuture$AsyncSupply.run$$$capture(CompletableFuture.java:1768)
        at java.base/java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java)
        at java.base/java.util.concurrent.CompletableFuture$AsyncSupply.exec(CompletableFuture.java:1760)
        at java.base/java.util.concurrent.ForkJoinTask.doExec$$$capture(ForkJoinTask.java:373)
        at java.base/java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java)
        at java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1182)
        at java.base/java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1655)
        at java.base/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1622)
        at java.base/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:165)
Caused by: java.net.UnknownHostException: No such host is known (http:)
    at java.base/java.net.Inet6AddressImpl.lookupAllHostAddr(Native Method)
    at java.base/java.net.InetAddress$PlatformNameService.lookupAllHostAddr(InetAddress.java:933)
    at java.base/java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1519)
    at java.base/java.net.InetAddress$NameServiceAddresses.get(InetAddress.java:852)
    at java.base/java.net.InetAddress.getAllByName0(InetAddress.java:1509)
    at java.base/java.net.InetAddress.getAllByName(InetAddress.java:1367)
    at java.base/java.net.InetAddress.getAllByName(InetAddress.java:1301)
    at io.netty.util.internal.SocketUtils$9.run(SocketUtils.java:169)
    at io.netty.util.internal.SocketUtils$9.run(SocketUtils.java:166)
    at java.base/java.security.AccessController.doPrivileged(AccessController.java:569)
    at io.netty.util.internal.SocketUtils.allAddressesByName(SocketUtils.java:166)
    at io.netty.resolver.DefaultNameResolver.doResolveAll(DefaultNameResolver.java:50)
    at io.netty.resolver.SimpleNameResolver.resolveAll(SimpleNameResolver.java:79)
    at io.netty.resolver.SimpleNameResolver.resolveAll(SimpleNameResolver.java:71)
    at io.netty.resolver.InetSocketAddressResolver.doResolveAll(InetSocketAddressResolver.java:73)
    at io.netty.resolver.InetSocketAddressResolver.doResolveAll(InetSocketAddressResolver.java:31)
    at io.netty.resolver.AbstractAddressResolver.resolveAll(AbstractAddressResolver.java:158)
    at reactor.netty.transport.TransportConnector.doResolveAndConnect(TransportConnector.java:300)
    at reactor.netty.transport.TransportConnector.lambda$connect$6(TransportConnector.java:127)
    at reactor.core.publisher.MonoFlatMap$FlatMapMain.onNext(MonoFlatMap.java:125)
    at reactor.netty.transport.TransportConnector$MonoChannelPromise._subscribe(TransportConnector.java:596)
    at reactor.netty.transport.TransportConnector$MonoChannelPromise.lambda$subscribe$0(TransportConnector.java:516)
    at io.netty.util.concurrent.AbstractEventExecutor.runTask$$$capture(AbstractEventExecutor.java:174)
    at io.netty.util.concurrent.AbstractEventExecutor.runTask(AbstractEventExecutor.java)
    at io.netty.util.concurrent.AbstractEventExecutor.safeExecute$$$capture(AbstractEventExecutor.java:167)
    at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java)
    at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:470)
    at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:503)
    at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:995)
    at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
    at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
HttpClient httpclient = HttpClient.create().wiretap("Http2DataSource",LogLevel.DEBUG,AdvancedByteBufFormat.TEXTUAL)
                            .secure(ssl -> ssl.sslContext(ctx)).protocol(HttpProtocol.H2)
                            .doOnConnected(conn -> conn
                                    .addHandlerLast(new ReadTimeoutHandler(readTimeout, TimeUnit.SECONDS))
                                    .addHandlerLast(new WriteTimeoutHandler(writeTimeout, TimeUnit.SECONDS)))
                            .resolver(DefaultAddressResolverGroup.INSTANCE);
                    ClientHttpConnector clientConnector = new ReactorClientHttpConnector(httpclient);
                   
 http2Template =    WebClient.builder().clientConnector(clientConnector).uriBuilderFactory(factory)
                                .defaultHeader(HttpHeaders.CONTENT_TYPE, MediaType.APPLICATION_FORM_URLENCODED_VALUE)
                                .build();```
    ``` response = http2Template.get()
                                .uri(uriBuilder -> uriBuilder.path(url).build())
                          .headers(httpHeaders -> httpHeaders.addAll(dataSourceRequest.getHttpHeader()))
                                .retrieve()
                                .toEntity(String.class)
                                .block();```