Getting error on logstash server

Hello team,
I am getting below error on logstash. Can you please help me on this. How to handle this in logstash

"log"=>"{\"timestamp\":\"2022-05-15 09:50:00,012+0400\",\"nodeId\":\"E9EBC60D-F4BD50A1-E285711E-EFEABBB0-115146B3\",\"initiator\":\"*TASK\",\"domain\":\"tasks\",\"type\":\"finished\",\"context\":\"Storage facet cleanup\",\"thread\":\"quartz-12-thread-20\",\"attributes\":{\"schedule\":\"Cron{properties={schedule.clientTimeZone=Asia/Dubai, schedule.startAt=2022-04-08T09:09:10.317+04:00, schedule.cronExpression=0 */10 * * * ?, schedule.type=cron}}\",\"currentState\":\"CurrentStateImpl{state=WAITING, nextRun=Sun May 15 10:00:00 GST 2022, future=null}\",\"lastRunState\":\"LastRunStateImpl{endState=OK, runStarted=Sun May 15 09:50:00 GST 2022, runDuration=8}\",\".name\":\"Storage facet cleanup\",\"lastRunState.runStarted\":\"1652593800003\",\".id\":\"e4c5b7be-0610-42eb-ada7-b5004dbef7fc\",\".typeName\":\"Storage facet cleanup\",\".visible\":\"false\",\".typeId\":\"repository.storage-facet-cleanup\",\"lastRunState.endState\":\"OK\",\".updated\":\"2022-04-08T09:09:10.317+04:00\",\".recoverable\":\"false\",\".message\":\"Reclaim storage for deleted repositories\",\"lastRunState.runDuration\":\"8\",\".exposed\":\"false\",\".created\":\"2022-04-08T09:09:10.317+04:00\"}}"}], :response=>{"index"=>{"_index"=>"siem-nexus-new-2022.04.22-000001", "_type"=>"_doc", "_id"=>"K3VExoABBcaDmjx8VhXi", "status"=>400, "error"=>{"type"=>"mapper_parsing_exception", "reason"=>"failed to parse", "caused_by"=>{"type"=>"illegal_argument_exception", "reason"=>"object field starting or ending with a [.] makes object resolution ambiguous: [.message]"}}}}}

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