Hot Topic Analytics problem


When we select Hot Topic Analytics, we are greeted with the error message "Cannot create Hot Topic chart (No engines available)".
We have noticed that Content1 server service isn't running on the Smart Analytics server and when we manually start it, it instantly stops. The application log of content1 displays "Persistent engine is inconsistent (IndexCompression) - Exiting".
Are these errors related?

Please bear in mind that Hot topics has been working properly for a while now with the OOB data and, to our knowledge, we haven't touched the Smart Analytics server in any way, apart from some necessary reboots.

What is your suggested course of action in order to fix this problem?

Thank you in advance!

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