Hi Prashanth,
Error you are getting because of conflicting jars, logic wise you are correct
to resolve this jar issue, you can check in your userlib folder if you have duplicate jars with different version , you can delete lower version jar.
In such scenario what i personally do is create a branchline , empty my userlib folder and download each module from marketplace again and then check if my app is working properly then i copy all jars from branchline to main branch.
Hope it helps!
java.util.ServiceConfigurationError: jakarta.mail.Provider: com.sun.mail.imap.IMAPProvider not a subtype at java.base/java.util.ServiceLoader.fail(ServiceLoader.java:589) at java.base/java.util.ServiceLoader$LazyClassPathLookupIterator.hasNextService(ServiceLoader.java:1237) at java.base/java.util.ServiceLoader$LazyClassPathLookupIterator.hasNext(ServiceLoader.java:1265) at java.base/java.util.ServiceLoader$2.hasNext(ServiceLoader.java:1300) at java.base/java.util.ServiceLoader$3.hasNext(ServiceLoader.java:1385) at jakarta.mail.Session.loadProviders(Session.java:964) at jakarta.mail.Session.<init>(Session.java:254) at jakarta.mail.Session.getInstance(Session.java:281) at org.simplejavamail.mailer.internal.MailerImpl.createMailSession(MailerImpl.java:198) at org.simplejavamail.mailer.internal.MailerImpl.<init>(MailerImpl.java:138) at org.simplejavamail.mailer.internal.MailerImpl.<init>(MailerImpl.java:123) at org.simplejavamail.mailer.internal.MailerRegularBuilderImpl.buildMailer(MailerRegularBuilderImpl.java:212) at com.mendix.datahub.connector.email.service.SendEmailHandler.setConnectionInfo(SendEmailHandler.java:236) at com.mendix.datahub.connector.email.service.SMTPEmail.isConnected(SMTPEmail.java:22) at com.mendix.datahub.connector.email.service.EmailServiceWorker.isConnected(EmailServiceWorker.java:97) at email_connector.actions.CheckServerConnection.checkOutgoingServerConnection(CheckServerConnection.java:122) at email_connector.actions.CheckServerConnection.executeAction(CheckServerConnection.java:56) at email_connector.actions.CheckServerConnection.executeAction(CheckServerConnection.java:29) at com.mendix.systemwideinterfaces.core.UserAction.execute(UserAction.java:58) at com.mendix.basis.actionmanagement.CoreActionHandlerImpl.doCall(CoreActionHandlerImpl.scala:71) at com.mendix.basis.actionmanagement.CoreActionHandlerImpl.call(CoreActionHandlerImpl.scala:48) at com.mendix.core.actionmanagement.internal.InternalCoreAction.call(InternalCoreAction.java:57) at com.mendix.basis.actionmanagement.ActionManager.$anonfun$executeSync$2(ActionManager.scala:104) at com.mendix.util.classloading.Runner$.withContextClassLoader(Runner.scala:20) at com.mendix.basis.actionmanagement.ActionManager.executeSync(ActionManager.scala:103) at com.mendix.basis.actionmanagement.UserActionCallBuilderImpl.execute(UserActionCallBuilderImpl.scala:57) at com.mendix.modules.microflowengine.actions.actioncall.ForegroundJavaAction.doExecute(ForegroundJavaAction.scala:35) at com.mendix.modules.microflowengine.actions.actioncall.ForegroundJavaAction.doExecute(ForegroundJavaAction.scala:11) at com.mendix.modules.microflowengine.actions.actioncall.JavaAction.execute(JavaAction.scala:38) at com.mendix.modules.microflowengine.microflow.impl.MicroflowObject.$anonfun$execute$1(MicroflowObject.scala:32) at scala.Option.flatMap(Option.scala:283) at com.mendix.modules.microflowengine.microflow.impl.MicroflowObject.execute(MicroflowObject.scala:29) at com.mendix.modules.microflowengine.microflow.impl.MicroflowImpl.executeAfterBreakingIfNecessary(MicroflowImpl.scala:176) at com.mendix.modules.microflowengine.microflow.impl.MicroflowImpl.executeAction(MicroflowImpl.scala:116) at com.mendix.systemwideinterfaces.core.UserAction.execute(UserAction.java:58) at com.mendix.basis.actionmanagement.CoreActionHandlerImpl.doCall(CoreActionHandlerImpl.scala:71) at com.mendix.basis.actionmanagement.CoreActionHandlerImpl.call(CoreActionHandlerImpl.scala:48) at com.mendix.core.actionmanagement.internal.InternalCoreAction.call(InternalCoreAction.java:57) at com.mendix.basis.actionmanagement.ActionManager.$anonfun$executeSync$2(ActionManager.scala:104) at com.mendix.util.classloading.Runner$.withContextClassLoader(Runner.scala:20) at com.mendix.basis.actionmanagement.ActionManager.executeSync(ActionManager.scala:103) at com.mendix.basis.component.ExecutionCore.doExecuteSync(ExecutionCore.scala:148) at com.mendix.basis.component.ExecutionCore.doExecuteSync$(ExecutionCore.scala:147) at com.mendix.basis.component.InternalCore.doExecuteSync(InternalCore.scala:24) at com.mendix.basis.component.ExecutionCore.executeSync(ExecutionCore.scala:97) at com.mendix.basis.component.ExecutionCore.executeSync$(ExecutionCore.scala:94) at com.mendix.basis.component.InternalCore.executeSync(InternalCore.scala:24) at com.mendix.modules.microflowengine.MicroflowExecuter$.executeSync(MicroflowExecuter.scala:19) at com.mendix.modules.microflowengine.actions.SubMicroflowAction.execute(SubMicroflowAction.scala:37) at com.mendix.modules.microflowengine.microflow.impl.MicroflowObject.$anonfun$execute$1(MicroflowObject.scala:32) at scala.Option.flatMap(Option.scala:283) at com.mendix.modules.microflowengine.microflow.impl.MicroflowObject.execute(MicroflowObject.scala:29) at com.mendix.modules.microflowengine.microflow.impl.MicroflowImpl.executeAfterBreakingIfNecessary(MicroflowImpl.scala:176) at com.mendix.modules.microflowengine.microflow.impl.MicroflowImpl.executeAction(MicroflowImpl.scala:116) at com.mendix.systemwideinterfaces.core.UserAction.execute(UserAction.java:58) at com.mendix.basis.actionmanagement.CoreActionHandlerImpl.doCall(CoreActionHandlerImpl.scala:71) at com.mendix.basis.actionmanagement.CoreActionHandlerImpl.call(CoreActionHandlerImpl.scala:48) at com.mendix.core.actionmanagement.internal.InternalCoreAction.call(InternalCoreAction.java:57) at com.mendix.basis.actionmanagement.ActionManager.$anonfun$executeSync$2(ActionManager.scala:104) at com.mendix.util.classloading.Runner$.withContextClassLoader(Runner.scala:20) at com.mendix.basis.actionmanagement.ActionManager.executeSync(ActionManager.scala:103) at com.mendix.basis.actionmanagement.MicroflowCallBuilderImpl.execute(MicroflowCallBuilderImpl.scala:62) at com.mendix.webui.actions.client.MicroflowRuntimeOperationExecutor.runMicroflow(MicroflowRuntimeOperationExecutor.scala:97) at com.mendix.webui.actions.client.MicroflowRuntimeOperationExecutor.$anonfun$apply$5(MicroflowRuntimeOperationExecutor.scala:57) at com.mendix.webui.actions.client.RegularClientAction$Helpers$.$anonfun$liftEither$1(RegularClientAction.scala:30) at com.mendix.webui.actions.client.RegularClientAction$Helpers$StateHandler.$anonfun$apply$4(RegularClientAction.scala:56) at com.mendix.webui.requesthandling.helpers.StateHandling.withState(StateHandling.scala:46) at com.mendix.webui.requesthandling.helpers.StateHandling.withState$(StateHandling.scala:43) at com.mendix.webui.actions.client.RegularClientAction$Helpers$StateHandler.withState(RegularClientAction.scala:46) at com.mendix.webui.actions.client.RegularClientAction$Helpers$StateHandler.apply(RegularClientAction.scala:54) at com.mendix.webui.actions.client.RegularClientAction$Helpers$StateHandler.apply(RegularClientAction.scala:46) at com.mendix.webui.actions.client.MicroflowRuntimeOperationExecutor.apply(MicroflowRuntimeOperationExecutor.scala:58) at com.mendix.webui.actions.client.RuntimeOperationAction.$anonfun$apply$1(RuntimeOperationAction.scala:49) at scala.util.Either.flatMap(Either.scala:352) at com.mendix.webui.actions.client.RuntimeOperationAction.apply(RuntimeOperationAction.scala:33) at com.mendix.webui.actions.client.RuntimeOperationAction.apply(RuntimeOperationAction.scala:22) at com.mendix.webui.actions.client.RegularClientAction$Helpers$.$anonfun$liftEither$1(RegularClientAction.scala:30) at com.mendix.webui.actions.client.RegularClientAction.$anonfun$execute$3(RegularClientAction.scala:120) at scala.util.Try$.apply(Try.scala:210) at com.mendix.webui.actions.client.RegularClientAction.$anonfun$execute$2(RegularClientAction.scala:120) at com.mendix.webui.actions.client.RegularClientAction.$anonfun$execute$2$adapted(RegularClientAction.scala:118) at com.mendix.webui.requesthandling.helpers.ContextHandling.$anonfun$inContext$7(ContextHandling.scala:59) at scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.scala:18) at com.mendix.basis.actionmanagement.ActionMonitoring$.$anonfun$monitor$1(ActionMonitoring.scala:52) at com.mendix.util.classloading.Runner$.withContextClassLoader(Runner.scala:20) at com.mendix.basis.actionmanagement.ActionMonitoring$.monitor(ActionMonitoring.scala:52) at com.mendix.webui.requesthandling.helpers.ContextHandling.inContext(ContextHandling.scala:59) at com.mendix.webui.requesthandling.helpers.ContextHandling.inContext$(ContextHandling.scala:33) at com.mendix.webui.actions.client.RegularClientAction.inContext(RegularClientAction.scala:94) at com.mendix.webui.requesthandling.helpers.ContextHandling.inContext(ContextHandling.scala:30) at com.mendix.webui.requesthandling.helpers.ContextHandling.inContext$(ContextHandling.scala:22) at com.mendix.webui.actions.client.RegularClientAction.inContext(RegularClientAction.scala:94) at com.mendix.webui.actions.client.RegularClientAction.$anonfun$execute$1(RegularClientAction.scala:118) at scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.scala:18) at com.mendix.webui.requesthandling.helpers.ProfileHandling.profileRequest(ProfileHandling.scala:14) at com.mendix.webui.requesthandling.helpers.ProfileHandling.profileRequest$(ProfileHandling.scala:10) at com.mendix.webui.actions.client.RegularClientAction.profileRequest(RegularClientAction.scala:94) at com.mendix.webui.actions.client.RegularClientAction.execute(RegularClientAction.scala:115) at com.mendix.webui.requesthandling.ClientRequestHandler.handleAction(ClientRequestHandler.scala:96) at com.mendix.webui.requesthandling.ClientRequestHandler.processRequest(ClientRequestHandler.scala:69) at com.mendix.externalinterface.connector.RequestHandler.doProcessRequest(RequestHandler.java:37) at com.mendix.external.connector.MxRuntimeConnector.$anonfun$processRequest$1(MxRuntimeConnector.scala:54) at com.mendix.external.connector.MxRuntimeConnector.$anonfun$processRequest$1$adapted(MxRuntimeConnector.scala:54) at com.mendix.util.classloading.Runner$.withContextClassLoader(Runner.scala:20) at com.mendix.external.connector.MxRuntimeConnector.processRequest(MxRuntimeConnector.scala:54) at com.mendix.basis.impl.MxRuntimeImpl.processRequest(MxRuntimeImpl.scala:218) at com.mendix.m2ee.appcontainer.server.handler.RuntimeServlet.service(RuntimeServlet.scala:40) at javax.servlet.http.HttpServlet.service(HttpServlet.java:750) at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:764) at org.eclipse.jetty.servlet.ServletHandler$ChainEnd.doFilter(ServletHandler.java:1665) at org.eclipse.jetty.websocket.servlet.WebSocketUpgradeFilter.doFilter(WebSocketUpgradeFilter.java:170) at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:202) at org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1635) at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:527) at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:221) at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1570) at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:221) at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1384) at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:176) at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:484) at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1543) at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:174) at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1306) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:129) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:122) at org.eclipse.jetty.server.Server.handle(Server.java:563) at org.eclipse.jetty.server.HttpChannel$RequestDispatchable.dispatch(HttpChannel.java:1598) at org.eclipse.jetty.server.HttpChannel.dispatch(HttpChannel.java:753) at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:501) at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:282) at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:314) at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:100) at org.eclipse.jetty.io.SelectableChannelEndPoint$1.run(SelectableChannelEndPoint.java:53) at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.runTask(AdaptiveExecutionStrategy.java:421) at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.consumeTask(AdaptiveExecutionStrategy.java:390) at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.tryProduce(AdaptiveExecutionStrategy.java:277) at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.run(AdaptiveExecutionStrategy.java:199) at org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:411) at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:969) at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.doRunJob(QueuedThreadPool.java:1194) at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:1149) at java.base/java.lang.Thread.run(Thread.java:829)