Bad Request error when creating a new Kibana index pattern

[Mark_Duncan]

seems I shouldn't have updated the .kibana_* indexes

Kibana: mapping set to strict, dynamic introduction of [references] within [doc] is not allowed

Same issue here. Came from an elastic stack 6.7.1 and just updated to 7.0.0. Our stack runs in docker. Kibana has no additional config.

this solved it:

PUT /.kibana_*/_settings
{
"settings": {
"default_pipeline": null
}
}