Error on: Unable to bulk upload the stats payload to the local cluster

Faced the below problem:

log [09:42:06.246] [warning][kibana-monitoring][monitoring-ui] [export_exception] failed to flush export bulks :: {"path":"/_monitoring/bulk","query":{"system_id":"kibana","system_api_version":"6","interval":"10000ms"},"body":"{"index":{"_type":"kibana_stats"}}\n{"kibana":{"uuid":"b94c7aef-943b-4aa3-8681-a86e8f5fd6c9","name":"CPX-X8OCUOBU7YH","index":".kibana","host":"localhost","transport_address":"localhost:5601","version":"7.0.1","snapshot":false,"status":"green"},"concurrent_connections":0,"os":{"load":{"1m":0,"5m":0,"15m":0},"memory":{"total_in_bytes":8425512960,"free_in_bytes":1580584960,"used_in_bytes":6844928000},"uptime_in_millis":910000,"platform":"win32","platformRelease":"win32-10.0.17763"},"process":{"event_loop_delay":8.03719999967143,"memory":{"heap":{"total_in_bytes":180113408,"used_in_bytes":153401616,"size_limit":1526909922},"resident_set_size_in_bytes":209526784},"uptime_in_millis":737724},"requests":{"disconnects":0,"total":0},"response_times":{"average":0,"max":0},"timestamp":"2019-07-29T09:42:01.221Z"}\n","statusCode":500,"response":"{"took":8,"ignored":false,"errors":true,"error":{"type":"export_exception","reason":"failed to flush export bulks","caused_by":{"type":"export_exception","reason":"bulk [default_local] reports failures when exporting documents","exceptions":[{"type":"export_exception","reason":"ClusterBlockException[blocked by: [FORBIDDEN/12/index read-only / allow delete (api)];]","caused_by":{"type":"cluster_block_exception","reason":"blocked by: [FORBIDDEN/12/index read-only / allow delete (api)];"}}]}}}"}
at respond (C:\ELK\kibana\kibana-7.0.1-windows-x86_64\node_modules\elasticsearch\src\lib\transport.js:308:15)
at checkRespForFailure (C:\ELK\kibana\kibana-7.0.1-windows-x86_64\node_modules\elasticsearch\src\lib\transport.js:267:7)
at HttpConnector. (C:\ELK\kibana\kibana-7.0.1-windows-x86_64\node_modules\elasticsearch\src\lib\connectors\http.js:166:7)
at IncomingMessage.wrapper (C:\ELK\kibana\kibana-7.0.1-windows-x86_64\node_modules\elasticsearch\node_modules\lodash\lodash.js:4935:19)
at IncomingMessage.emit (events.js:194:15)
at endReadableNT (_stream_readable.js:1103:12)
at process._tickCallback (internal/process/next_tick.js:63:19)
log [09:42:06.254] [warning][kibana-monitoring][monitoring-ui] Unable to bulk upload the stats payload to the local cluster

What is going on wrong here? I have installed docker and kitematics but have since removed them. Was it because of that?

Can you check the error logs for your Elasticsearch cluster? Maybe there are more details in there.

There is a similar error here: FORBIDDEN/12/index read-only / allow delete (api)]

Maybe the solution is in there.