Errors in Xray Test Case Import when importing CSV data in Status Mapping

Erros in Xray Test Case Import when importing CSV data.
Sometimes it returns the error: "Status 'XXXX' does not have a linked step in the 'YYYY' workflow. Please map to a different status."
Other times it returns: "Unexpected failure occurred. Importer will stop immediately. Data may be in an unstable state" in com.atlassian.jira.plugins.importer.imports.config.StatusMappingUtil

Both cases are related to Status Mapping so they could be the same problem. And when the CSV file data (after transformed into Jira CSV format) is imported using Jira CSV Importer it works without errors.