[WildFly 18.0.1] - java.net.URISyntaxException: Expected authority at index 12

We are migrating from Wildfly10.1.0 to Wildfly18.0.1. While doing external lookup, we are getting below error but same works fine in Wildfly10. There seems to be issue with wildfly naming client (which wasnt there in wildfly10). 

 2021-06-28 14:06:39,442 ERROR [stderr] (default task-11) javax.naming.ConfigurationException: WFNAM00003: Invalid naming provider URI: fusionbus:// [Root exception is java.net.URISyntaxException: Expected authority at index 12: fusionbus://]
 2021-06-28 14:06:39,442 ERROR [stderr] (default task-11)         at org.wildfly.naming.client.ProviderEnvironment$Builder.populateProviderUris(ProviderEnvironment.java:604)
 2021-06-28 14:06:39,442 ERROR [stderr] (default task-11)         at org.wildfly.naming.client.ProviderEnvironment$Builder.populateFromEnvironment(ProviderEnvironment.java:356)
 2021-06-28 14:06:39,443 ERROR [stderr] (default task-11)         at org.wildfly.naming.client.WildFlyRootContext.<init>(WildFlyRootContext.java:114)
 2021-06-28 14:06:39,443 ERROR [stderr] (default task-11)         at org.wildfly.naming.client.WildFlyRootContext.<init>(WildFlyRootContext.java:89)
 2021-06-28 14:06:39,443 ERROR [stderr] (default task-11)         at org.wildfly.naming.client.WildFlyRootContext.<init>(WildFlyRootContext.java:79)
 2021-06-28 14:06:39,443 ERROR [stderr] (default task-11)         at org.wildfly.naming.client.WildFlyInitialContextFactory.getInitialContext(WildFlyInitialContextFactory.java:54)
 2021-06-28 14:06:39,443 ERROR [stderr] (default task-11)         at org.jboss.as.naming.InitialContext.getURLOrDefaultInitCtx(InitialContext.java:144)
 2021-06-28 14:06:39,443 ERROR [stderr] (default task-11)         at javax.naming.InitialContext.lookup(InitialContext.java:417)
 2021-06-28 14:06:39,443 ERROR [stderr] (default task-11)         at javax.naming.InitialContext.lookup(InitialContext.java:417)
 2021-06-28 14:06:39,443 ERROR [stderr] (default task-11)         at com.sbc.egs.common.util.MQSessionPoolFactory.createConnection(MQSessionPoolFactory.java:95)
 2021-06-28 14:06:39,443 ERROR [stderr] (default task-11)         at com.sbc.egs.common.util.MQSessionPoolFactory.makeObject(MQSessionPoolFactory.java:44)
 2021-06-28 14:06:39,444 ERROR [stderr] (default task-11)         at com.sbc.egs.common.util.MQSessionPoolFactory.makeObject(MQSessionPoolFactory.java:1)
 2021-06-28 14:06:39,444 ERROR [stderr] (default task-11)         at org.apache.commons.pool2.impl.GenericKeyedObjectPool.create(GenericKeyedObjectPool.java:1041)
 2021-06-28 14:06:39,444 ERROR [stderr] (default task-11)         at org.apache.commons.pool2.impl.GenericKeyedObjectPool.borrowObject(GenericKeyedObjectPool.java:357)
 2021-06-28 14:06:39,444 ERROR [stderr] (default task-11)         at org.apache.commons.pool2.impl.GenericKeyedObjectPool.borrowObject(GenericKeyedObjectPool.java:279)
 2021-06-28 14:06:39,444 ERROR [stderr] (default task-11)         at com.sbc.egs.common.util.EGSResourceManager.getQSession(EGSResourceManager.java:137)
 2021-06-28 14:06:39,444 ERROR [stderr] (default task-11)         at com.sbc.egs.common.util.EGSQManager.putMessageIntoQ(EGSQManager.java:121)
 2021-06-28 14:06:39,444 ERROR [stderr] (default task-11)         at com.att.egs.egsservice.service.UverseServiceManager.sendMessage(UverseServiceManager.java:1022)
 2021-06-28 14:06:39,444 ERROR [stderr] (default task-11)         at com.att.egs.egsservice.service.UverseServiceManager.process(UverseServiceManager.java:270)
 2021-06-28 14:06:39,444 ERROR [stderr] (default task-11)         at com.att.egs.egsservice.uverse.EGSLSSvcsBindingImpl.sendEmail(EGSLSSvcsBindingImpl.java:108)
2021-06-28 14:06:39,454 ERROR [stderr] (default task-11) Caused by: java.net.URISyntaxException: Expected authority at index 12: fusionbus://
 2021-06-28 14:06:39,454 ERROR [stderr] (default task-11)         at java.net.URI$Parser.fail(URI.java:2847)
 2021-06-28 14:06:39,454 ERROR [stderr] (default task-11)         at java.net.URI$Parser.failExpecting(URI.java:2853)
 2021-06-28 14:06:39,454 ERROR [stderr] (default task-11)         at java.net.URI$Parser.parseHierarchical(URI.java:3101)
 2021-06-28 14:06:39,455 ERROR [stderr] (default task-11)         at java.net.URI$Parser.parse(URI.java:3052)
 2021-06-28 14:06:39,455 ERROR [stderr] (default task-11)         at java.net.URI.<init>(URI.java:588)
 2021-06-28 14:06:39,455 ERROR [stderr] (default task-11)         at org.wildfly.naming.client.ProviderEnvironment$Builder.populateProviderUris(ProviderEnvironment.java:602)