CSV import failing on some instances

Summary

When importing CSV file, system will fail to import with the following error:
"Unexpected failure occurred. Importer will stop immediately. Data may be in an unstable state: com.atlassian.jira.issue.search.SearchException: Attempted to perform non-db capable search in Vertigo mode: Attempted to perform non-db capable search in Vertigo mode"

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Steps to Replicate

1. Navigate to External System Import
2. Select CSV
3. Select CSV file to upload > complete 3 steps
4. Select Begin Import

Expected Result

Issues/projects to be created. Sample:

Current Result

Import failed - 
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Cloud version: JIRA v1001.0.0-SNAPSHOT