Kibana cluster fails with "Checking Elasticsearch version" error

Hi,

i use Opendistro security version 1.3.0, elasticsearch and Kibana version 7.3.2. my elasticsearch works perfectly good. but my kibana log says “Checking Elasticsearch version”.

to get some stacktrace of these errors, i have turned on logging.verbose in kibana config. but no symptoms, can some one please help me here?