503 Service Temporarily Unavailable

Hi

I have installed to a k8s cluster in azure the ELK stack, all in version 8.2.0.
I have used this guide for assistance elk deployment
Unfortunately i get when i try to access kibana from 5601 (i have mapped the ingress to it)

From the logs of kibana pod i get the following

[2022-05-12T09:29:35.560+00:00][ERROR][plugins.taskManager] [WorkloadAggregator]: Error: Invalid workload: {"took":0,"timed_out":false,"_shards":{"total":0,"successful":0,"skipped":0,"failed":0},"hits":{"total":{"value":0,"relation":"eq"},"max_score":0,"hits":[]}}

Any help would be aprecciated.