The indices which match this index pattern don't contain any time fields

Thanks for your help so far @can.ozdemir.

We're currently using Kibana 7.9.3, I can see there are two upgrade paths available from the admin page (7.16.2 and 7.15.2), do you think upgrading might help?

Right now I think there is something fundamentally wrong, we have two other index patterns, both of which have mapping conflicts e.g.

These conflicts have been resolved a long time ago, but when I click refresh, no changes occur, I can see similar errors as above when I view the F12 developer mode e.g.:

GET*&meta_fields=_source 400

Uncaught (in promise) TypeError: Cannot read properties of undefined (reading 'get')
    at IndexPattern.addError [as onError] (core.entry.js:84)
    at data.plugin.js:14

When I click edit on one of these fields, I can see the reason for conflicts, but they are referring to index logs that have been cleaned up a long time ago (we only hold 14 days):

Anyway, this is the main reason why I started this thread because on our development index I was trying to fix the refresh issue, this lead me to delete the index and start again but now get stuck creating the index pattern :frowning:

The only thing I can think of, is to do an upgrade as I want to fix these mapping conflicts on existing index patterns and also re-create my dev index pattern.

I created a new account (free trial) with elastic v7.16.2, I didn't run into any issues.

Ideally, I do not want to upgrade in case of loss, but I do not know what else to try. I can very well upgrade but may still have the same issues.

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