No such index documents error after migration to 0.5.11

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Gorse version (gorse-in-one:0.5.11)

Describe the bug After migrating from 0.5.10 to 0.5.11, the recommend apis like '/api/feedback/non-personalized/popular, /api/feedback/:userId' returns this response: "No such index documents" error.

To Reproduce Migrate from 0.5.10 to 0.5.11 and call recommends api. No change in postgres db.

Expected behavior Api must return response without error

Additional context Remigrating to 0.5.10 solves problem.

Thanks in advance