Getting following error while starting application -
org.springframework.dao.DataAccessResourceFailureException: Timed out after 30000 ms while waiting for a server that matches ReadPreferenceServerSelector{readPreference=primary}. Client view of cluster state is {type=UNKNOWN, servers=[{address=localhost:27017, type=UNKNOWN, state=CONNECTING, exception={com.mongodb.MongoSocketOpenException: Exception opening socket}, caused by {io.netty.channel.AbstractChannel$AnnotatedConnectException: Connection refused: localhost/127.0.0.1:27017}, caused by {java.net.ConnectException: Connection refused}}]
at org.springframework.data.mongodb.core.MongoExceptionTranslator.translateExceptionIfPossible(MongoExceptionTranslator.java:93) ~[spring-data-mongodb-4.1.0.jar:4.1.0]
Suppressed: reactor.core.publisher.FluxOnAssembly$OnAssemblyException:
Error has been observed at the following site(s):
*__checkpoint ⇢ Handler com.greglturnquist.hackingspringboot.controller.HomeController#home() [DispatcherHandler]
*__checkpoint ⇢ HTTP GET “/” [ExceptionHandlingWebHandler]
Original Stack Trace:
at org.springframework.data.mongodb.core.MongoExceptionTranslator.translateExceptionIfPossible(MongoExceptionTranslator.java:93) ~[spring-data-mongodb-4.1.0.jar:4.1.0]
at org.springframework.data.mongodb.core.ReactiveMongoTemplate.potentiallyConvertRuntimeException(ReactiveMongoTemplate.java:2702) ~[spring-data-mongodb-4.1.0.jar:4.1.0]
at org.springframework.data.mongodb.core.ReactiveMongoTemplate.lambda$translateException$95(ReactiveMongoTemplate.java:2685) ~[spring-data-mongodb-4.1.0.jar:4.1.0]
at reactor.core.publisher.Flux.lambda$onErrorMap$27(Flux.java:7099) ~[reactor-core-3.5.6.jar:3.5.6]
at reactor.core.publisher.FluxOnErrorResume$ResumeSubscriber.onError(FluxOnErrorResume.java:94) ~[reactor-core-3.5.6.jar:3.5.6]
at reactor.core.publisher.MonoFlatMapMany$FlatMapManyInner.onError(MonoFlatMapMany.java:255) ~[reactor-core-3.5.6.jar:3.5.6]
at reactor.core.publisher.FluxConcatMapNoPrefetch$FluxConcatMapNoPrefetchSubscriber.maybeOnError(FluxConcatMapNoPrefetch.java:326) ~[reactor-core-3.5.6.jar:3.5.6]
at reactor.core.publisher.FluxConcatMapNoPrefetch$FluxConcatMapNoPrefetchSubscriber.onError(FluxConcatMapNoPrefetch.java:220) ~[reactor-core-3.5.6.jar:3.5.6]
at reactor.core.publisher.FluxCreate$BaseSink.error(FluxCreate.java:474) ~[reactor-core-3.5.6.jar:3.5.6]
at reactor.core.publisher.FluxCreate$BufferAsyncSink.drain(FluxCreate.java:802) ~[reactor-core-3.5.6.jar:3.5.6]
at reactor.core.publisher.FluxCreate$BufferAsyncSink.error(FluxCreate.java:747) ~[reactor-core-3.5.6.jar:3.5.6]
at reactor.core.publisher.FluxCreate$SerializedFluxSink.drainLoop(FluxCreate.java:237) ~[reactor-core-3.5.6.jar:3.5.6]
at reactor.core.publisher.FluxCreate$SerializedFluxSink.drain(FluxCreate.java:213) ~[reactor-core-3.5.6.jar:3.5.6]
at reactor.core.publisher.FluxCreate$SerializedFluxSink.error(FluxCreate.java:189) ~[reactor-core-3.5.6.jar:3.5.6]
at reactor.core.publisher.LambdaMonoSubscriber.doError(LambdaMonoSubscriber.java:155) ~[reactor-core-3.5.6.jar:3.5.6]
at reactor.core.publisher.LambdaMonoSubscriber.onError(LambdaMonoSubscriber.java:150) ~[reactor-core-3.5.6.jar:3.5.6]
at reactor.core.publisher.FluxMap$MapSubscriber.onError(FluxMap.java:134) ~[reactor-core-3.5.6.jar:3.5.6]
at reactor.core.publisher.MonoNext$NextSubscriber.onError(MonoNext.java:93) ~[reactor-core-3.5.6.jar:3.5.6]
at reactor.core.publisher.MonoNext$NextSubscriber.onError(MonoNext.java:93) ~[reactor-core-3.5.6.jar:3.5.6]
at reactor.core.publisher.MonoFlatMap$FlatMapMain.secondError(MonoFlatMap.java:241) ~[reactor-core-3.5.6.jar:3.5.6]
at reactor.core.publisher.MonoFlatMap$FlatMapInner.onError(MonoFlatMap.java:315) ~[reactor-core-3.5.6.jar:3.5.6]
at reactor.core.publisher.MonoPeekTerminal$MonoTerminalPeekSubscriber.onError(MonoPeekTerminal.java:258) ~[reactor-core-3.5.6.jar:3.5.6]
Course: https://www.educative.io/courses/build-e-commerce-apps-with-reactive-programming-in-spring-boot
Lesson: https://www.educative.io/courses/build-e-commerce-apps-with-reactive-programming-in-spring-boot/m2pQy0PX6PO