Troubleshoot java.lang.NullPointerException: The supplier returned null

[sag1]

Hello,

I am hitting my head due to this error. It's better to have a complete stacktrace where it fails. How to add more logs ? How to troubleshoot this error ?

{
"timestamp": "2022-09-02T08:34:42.718Z",
"sequence": 99,
"loggerClassName": "org.jboss.logging.Logger",
"loggerName": "io.quarkus.runtime.Application",
"level": "ERROR",
"message": "Failed to start application (with profile prod)",
"threadName": "main",
"threadId": 1,
"mdc": {},
"ndc": "",
"hostName": "powo-backend-staging-7964cf9896-xrkr4",
"processName": "quarkus-run.jar",
"processId": 1,
"stackTrace": "java.lang.NullPointerException: The supplier returned null\n\tat io.smallrye.mutiny.operators.uni.UniOnFailureTransform$UniOnFailureTransformProcessor.onFailure(UniOnFailureTransform.java:62)\n\tat io.smallrye.mutiny.operators.uni.builders.UniCreateFromPublisher$PublisherSubscriber.onError(UniCreateFromPublisher.java:81)\n\tat io.smallrye.mutiny.helpers.HalfSerializer.onError(HalfSerializer.java:56)\n\tat io.smallrye.mutiny.helpers.StrictMultiSubscriber.onFailure(StrictMultiSubscriber.java:91)\n\tat io.smallrye.mutiny.subscription.MultiSubscriber.onError(MultiSubscriber.java:73)\n\tat io.smallrye.mutiny.subscription.SerializedSubscriber.onFailure(SerializedSubscriber.java:102)\n\tat io.smallrye.mutiny.operators.multi.MultiRetryWhenOp$RetryWhenOperator.testOnFailurePredicate(MultiRetryWhenOp.java:136)\n\tat io.smallrye.mutiny.operators.multi.MultiRetryWhenOp$RetryWhenOperator.onFailure(MultiRetryWhenOp.java:119)\n\tat io.smallrye.mutiny.subscription.MultiSubscriber.onError(MultiSubscriber.java:73)\n\tat io.smallrye.mutiny.converters.uni.UniToMultiPublisher$UniToMultiSubscription.onFailure(UniToMultiPublisher.java:103)\n\tat io.smallrye.mutiny.operators.uni.UniOperatorProcessor.onFailure(UniOperatorProcessor.java:54)\n\tat io.smallrye.mutiny.vertx.AsyncResultUni.lambda$subscribe$1(AsyncResultUni.java:37)\n\tat io.smallrye.mutiny.vertx.DelegatingHandler.handle(DelegatingHandler.java:25)\n\tat io.vertx.ext.web.client.impl.HttpContext.handleFailure(HttpContext.java:386)\n\tat io.vertx.ext.web.client.impl.HttpContext.execute(HttpContext.java:380)\n\tat io.vertx.ext.web.client.impl.HttpContext.next(HttpContext.java:355)\n\tat io.vertx.ext.web.client.impl.HttpContext.fire(HttpContext.java:322)\n\tat io.vertx.ext.web.client.impl.HttpContext.fail(HttpContext.java:303)\n\tat io.vertx.ext.web.client.impl.HttpContext.lambda$handleCreateRequest$6(HttpContext.java:486)\n\tat io.vertx.core.impl.future.FutureImpl$3.onFailure(FutureImpl.java:153)\n\tat io.vertx.core.impl.future.FutureBase.emitFailure(FutureBase.java:75)\n\tat io.vertx.core.impl.future.FutureImpl.tryFail(FutureImpl.java:230)\n\tat io.vertx.core.impl.future.PromiseImpl.tryFail(PromiseImpl.java:23)\n\tat io.vertx.core.http.impl.HttpClientImpl.lambda$doRequest$8(HttpClientImpl.java:645)\n\tat io.vertx.core.net.impl.pool.Endpoint.lambda$getConnection$0(Endpoint.java:52)\n\tat io.vertx.core.http.impl.SharedClientHttpStreamEndpoint$Request.handle(SharedClientHttpStreamEndpoint.java:162)\n\tat io.vertx.core.http.impl.SharedClientHttpStreamEndpoint$Request.handle(SharedClientHttpStreamEndpoint.java:123)\n\tat io.vertx.core.impl.EventLoopContext.emit(EventLoopContext.java:55)\n\tat io.vertx.core.impl.ContextBase.emit(ContextBase.java:239)\n\tat io.vertx.core.net.impl.pool.SimpleConnectionPool$ConnectFailed$1.run(SimpleConnectionPool.java:384)\n\tat io.vertx.core.net.impl.pool.CombinerExecutor.submit(CombinerExecutor.java:50)\n\tat io.vertx.core.net.impl.pool.SimpleConnectionPool.execute(SimpleConnectionPool.java:245)\n\tat io.vertx.core.net.impl.pool.SimpleConnectionPool.lambda$connect$2(SimpleConnectionPool.java:259)\n\tat io.vertx.core.http.impl.SharedClientHttpStreamEndpoint.lambda$connect$2(SharedClientHttpStreamEndpoint.java:104)\n\tat io.vertx.core.impl.future.FutureImpl$3.onFailure(FutureImpl.java:153)\n\tat io.vertx.core.impl.future.FutureBase.emitFailure(FutureBase.java:75)\n\tat io.vertx.core.impl.future.FutureImpl.tryFail(FutureImpl.java:230)\n\tat io.vertx.core.impl.future.Composition$1.onFailure(Composition.java:66)\n\tat io.vertx.core.impl.future.FutureBase.emitFailure(FutureBase.java:75)\n\tat io.vertx.core.impl.future.FailedFuture.addListener(FailedFuture.java:98)\n\tat io.vertx.core.impl.future.Composition.onFailure(Composition.java:55)\n\tat io.vertx.core.impl.future.FutureBase.emitFailure(FutureBase.java:75)\n\tat io.vertx.core.impl.future.FutureImpl.tryFail(FutureImpl.java:230)\n\tat io.vertx.core.impl.future.PromiseImpl.tryFail(PromiseImpl.java:23)\n\tat io.vertx.core.impl.EventLoopContext.emit(EventLoopContext.java:55)\n\tat io.vertx.core.impl.ContextBase.emit(ContextBase.java:239)\n\tat io.vertx.core.net.impl.NetClientImpl.failed(NetClientImpl.java:302)\n\tat io.vertx.core.net.impl.NetClientImpl.lambda$connectInternal$4(NetClientImpl.java:270)\n\tat io.netty.util.concurrent.DefaultPromise.notifyListener0(DefaultPromise.java:578)\n\tat io.netty.util.concurrent.DefaultPromise.notifyListenersNow(DefaultPromise.java:552)\n\tat io.netty.util.concurrent.DefaultPromise.notifyListeners(DefaultPromise.java:491)\n\tat io.netty.util.concurrent.DefaultPromise.addListener(DefaultPromise.java:184)\n\tat io.netty.util.concurrent.DefaultPromise.addListener(DefaultPromise.java:35)\n\tat io.vertx.core.net.impl.NetClientImpl.connectInternal(NetClientImpl.java:256)\n\tat io.vertx.core.net.impl.NetClientImpl.lambda$connectInternal$5(NetClientImpl.java:275)\n\tat io.netty.util.concurrent.AbstractEventExecutor.runTask(AbstractEventExecutor.java:174)\n\tat io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:167)\n\tat io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:470)\n\tat io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:503)\n\tat io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:997)\n\tat io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)\n\tat io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)\n\tat java.base/java.lang.Thread.run(Thread.java:833)\n"
}

application.properties
quarkus.mongodb.connection-string = mongodb://localhost:27017
#mandatory if you don't specify the name of the database using @MongoEntity
quarkus.mongodb.database = powo
quarkus.http.port=8080
quarkus.http.same-site-cookie.jwt.value=Strict
#OIDC
quarkus.oidc.enabled=false
quarkus.oidc-client.auth-server-url=https://openid.connect.io
quarkus.oidc-client.client-id=aaaaa-bbbbbb-cccc-dddd-fffff
quarkus.oidc-client.credentials.client-secret.value=zsdsfdazerty
quarkus.oidc-client.credentials.client-secret.method=post
quarkus.oidc-client.grant.type=code
quarkus.oidc.authentication.user-info-required=true

#Rest-client
quarkus.rest-client.beapi.url=http://localhost:35036
quarkus.rest-client.beapi.scope=javax.inject.Singleton
#Enable Rest Client logging
quarkus.rest-client.logging.scope=request-response

#Prometheus endpoint /metrics instead of default /q/metrics
quarkus.micrometer.export.prometheus.path=/metrics

#Logging
quarkus.log.level=DEBUG

[sag1]

It's a bug, follow there