Connection Refused when trying to validate secrete manager with Azure Key Vault

Secret Manager validation failed

Connection failed
 Connection refused: no further information: xxxxx.vault.azure.net/xxx.xxx.xx.xxx:443
 Suppressed: #block terminated with an error

org.jetel.exception.JetelRuntimeException: Connection failed
	at org.jetel.graph.runtime.secrets.AzureSecretManager.validate(AzureSecretManager.java:73)
	at com.cloveretl.server.f.e.m.a(Main:86)
	at com.cloveretl.server.secretmanager.b.i(Main:68)
	at com.cloveretl.server.facade.a.a.validateSecretManager(Main:4544)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:566)
	at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:344)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:198)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163)
	at com.cloveretl.server.aop.UserAccessAdvice.invoke(Main:96)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
	at com.cloveretl.server.aop.AuditLogAdvice.invoke(Main:121)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
	at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:215)
	at com.sun.proxy.$Proxy122.validateSecretManager(Unknown Source)
	at com.cloveretl.server.web.gui.i.c.actionValidate(Main:335)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:566)
	at org.apache.el.parser.AstValue.invoke(AstValue.java:247)
	at org.apache.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:267)
	at com.sun.faces.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:65)
	at com.sun.faces.application.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:66)
	at com.sun.faces.application.ActionListenerImpl.getNavigationOutcome(ActionListenerImpl.java:82)
	at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:71)
	at javax.faces.component.UICommand.broadcast(UICommand.java:222)
	at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:847)
	at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1396)
	at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:58)
	at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:76)
	at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:177)
	at javax.faces.webapp.FacesServlet.executeLifecyle(FacesServlet.java:707)
	at javax.faces.webapp.FacesServlet.service(FacesServlet.java:451)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at org.primefaces.webapp.filter.FileUploadFilter.doFilter(FileUploadFilter.java:111)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at com.cloveretl.server.filter.GzipOutputFilter.doFilter(Main:754)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:712)
	at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:459)
	at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:384)
	at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:312)
	at org.ocpsoft.rewrite.servlet.impl.HttpRewriteResultHandler.handleResult(HttpRewriteResultHandler.java:42)
	at org.ocpsoft.rewrite.servlet.RewriteFilter.rewrite(RewriteFilter.java:297)
	at org.ocpsoft.rewrite.servlet.RewriteFilter.doFilter(RewriteFilter.java:198)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at com.cloveretl.server.filter.LastPageFilter.doFilter(Main:60)
	at com.cloveretl.server.worker.commons.filter.HttpFilterBase.doFilter(Main:41)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at com.cloveretl.server.filter.CookieFilter.doFilter(Main:37)
	at com.cloveretl.server.worker.commons.filter.HttpFilterBase.doFilter(Main:41)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at com.cloveretl.server.filter.RedirectXmlToJsfFilter.doFilter(Main:45)
	at com.cloveretl.server.worker.commons.filter.HttpFilterBase.doFilter(Main:41)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at com.cloveretl.server.filter.AuthenticationFilter.doFilter(Main:61)
	at com.cloveretl.server.worker.commons.filter.HttpFilterBase.doFilter(Main:41)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at com.cloveretl.server.filter.AddSecurityHeadersFilter.doFilter(Main:44)
	at com.cloveretl.server.worker.commons.filter.HttpFilterBase.doFilter(Main:41)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100)
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)