Logstash 7.6.2 cant connect to Elastic in Elastic Cloud

I have Logstash 7.6.2 running in my local & using elasticsearch output plugin to write data to Elastic in Elastic Cloud.

		elasticsearch {
			hosts => ["https://ELASTIC-CLOUD-DNS:9243"]
			ssl => true 
			ssl_certificate_verification => false
			cacert => "PATH_TO_CA_CERT_IN_PEM_DOWNLOADED_FROM_ELASTIC-CLOUD"
			user => "USERNAME"
			password => "PASSWORD"
			index => "index-%{my-date}"	
		}

Error seen when running Logstash:

[logstash.outputs.elasticsearch][main] Attempted to resurrect connection to dead ES instance, but got an error. {:url=>"https://xxxxxx:xxxxxx@EC-DNS:9243/", :error_type=>LogStash::Outputs::Elasticsearch::HttpClient::Pool::HostUnreachableError, :error=>"Elasticsearch Unreachable: [https://xxxxxx:xxxxxx@EC-DNS:9243/][Manticore::ClientProtocolException] PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target"}