Migration fails "Migration failed: org.jboss.migration.core.ServerMigrationFailureException: Subsystem config /profile=default/subsystem=web migration failed: undefined" when migrating to EAP 7.1

Issue

• Getting the following error while migrating from EAP 6.4.x to EAP 7.1.x using Migration Tool:

ERROR [logger] Migration failed: org.jboss.migration.core.ServerMigrationFailureException: Subsystem config /profile=default/subsystem=web migration failed: undefined
    at org.jboss.migration.wfly10.config.task.management.subsystem.MigrateSubsystemResourceSubtaskBuilder.migrateConfiguration(MigrateSubsystemResourceSubtaskBuilder.java:59) [jboss-server-migration-wildfly10.0-1.0.3.Final-redhat-4.jar:1.0.3.Final-redhat-4]
    at org.jboss.migration.wfly10.config.task.management.subsystem.MigrateSubsystemResourceSubtaskBuilder.lambda$null$0(MigrateSubsystemResourceSubtaskBuilder.java:43) [jboss-server-migration-wildfly10.0-1.0.3.Final-redhat-4.jar:1.0.3.Final-redhat-4]
    at org.jboss.migration.core.task.component.ComponentTask$Builder.lambda$buildRunnable$0(ComponentTask.java:129) [jboss-server-migration-core-1.0.3.Final-redhat-4.jar:1.0.3.Final-redhat-4]
    at org.jboss.migration.core.task.component.ComponentTask.run(ComponentTask.java:46) [jboss-server-migration-core-1.0.3.Final-redhat-4.jar:1.0.3.Final-redhat-4]
    at org.jboss.migration.core.task.TaskExecutionImpl.run(TaskExecutionImpl.java:169) [jboss-server-migration-core-1.0.3.Final-redhat-4.jar:1.0.3.Final-redhat-4]
    at org.jboss.migration.core.task.TaskExecutionImpl.execute(TaskExecutionImpl.java:159) [jboss-server-migration-core-1.0.3.Final-redhat-4.jar:1.0.3.Final-redhat-4]
    at org.jboss.migration.core.task.TaskContextImpl.execute(TaskContextImpl.java:68) [jboss-server-migration-core-1.0.3.Final-redhat-4.jar:1.0.3.Final-redhat-4]
    at org.jboss.migration.core.task.TaskContextImpl.execute(TaskContextImpl.java:32) [jboss-server-migration-core-1.0.3.Final-redhat-4.jar:1.0.3.Final-redhat-4]
...

• Migration fails from 6.4 to 7.1 using migration tool