Monitoring cluster shows no data

Hello, I have a question about monitoring, my monitoring cluster shows no data. "No monitoring data found".
The installation in a few nodes production cluster and one node monitoring cluster (both are 8.6.1 now). Monitoring cluster hosts metricbeat with mode: cluster configuration. It seems that data are ingested fine into datastream with correct timestamps, etc.
But in the Kibana log, I see errors about missing cluster_uuid keyword field.
ResponseError: search_phase_execution_exception: [illegal_argument_exception] Reason: no mapping found for `cluster_uuid` in order to collapse on;
The original template .monitoring-es-mb contains an alias with target elasticsearch>cluster>id. This source field is present in documents, but the alias cluster_uuid doesn't.
Can someone help me to solve this? What I missed?
Thank you!

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