After migrating to 7.12.0 from previous version using migration tool business central starts with repository not found exception

Migrate .niogit of 7.11.1 to 7.12.0 using migration tool.Then starts 7.12.0 BC with migrated .niogit.

Getting below exception on the eap log,

`09:03:48,087 ERROR [org.uberfire.ext.metadata.io.BatchIndex] (Thread-115) Index fails. [@dashbuilder/datasets/master]: java.util.concurrent.CompletionException: java.lang.RuntimeException: Repository not found inside space dashbuilder with path default://master@dashbuilder/datasets/definitions/gitContributors.dset (root path default://master@dashbuilder/datasets/)
    at java.base/java.util.concurrent.CompletableFuture.encodeThrowable(CompletableFuture.java:314)
    at java.base/java.util.concurrent.CompletableFuture.completeThrowable(CompletableFuture.java:319)
    at java.base/java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:718)
    at java.base/java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:506)
    at java.base/java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1705)
    at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
    at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
    at java.base/java.lang.Thread.run(Thread.java:829)
Caused by: java.lang.RuntimeException: Repository not found inside space dashbuilder with path default://master@dashbuilder/datasets/definitions/gitContributors.dset (root path default://master@dashbuilder/datasets/)
    at deployment.business-central.war//org.guvnor.common.services.project.backend.server.WorkspaceProjectServiceImpl.resolveProject(WorkspaceProjectServiceImpl.java:505)
    at deployment.business-central.war//org.guvnor.common.services.project.backend.server.WorkspaceProjectServiceImpl.lambda$resolveProject$3(WorkspaceProjectServiceImpl.java:521)
    at java.base/java.util.Optional.map(Optional.java:265)
    at deployment.business-central.war//org.guvnor.common.services.project.backend.server.WorkspaceProjectServiceImpl.resolveProject(WorkspaceProjectServiceImpl.java:521)
    at deployment.business-central.war//org.kie.workbench.common.screens.impl.LibraryFileUpdateNotifier.lambda$onBatchIndexEvent$1(LibraryFileUpdateNotifier.java:65)
    at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:195)
`