Getting error - Unable to connect with Loki. Please check the server logs for more details

I have installed loki-stack using attached values.yaml loki:

I am able to view logs from pods, containers. I have installed tempo using helm install tempo grafana/tempo

Able to view traces as well but not able to corelate the traces to logs. Trying to add derived fields but when clicked on Test in loki getting → “Unable to connect with Loki. Please check the server logs for more details”.

[enter image description here](
![loki-datasource-conf|518x500](upload://iYqgA6GFOJ9OZbZkTDOj8G7Mcxy.png)
```loki:
  auth_enabled: false
  commonConfig:
    path_prefix: /var/loki
    replication_factor: 1
  compactor:
    apply_retention_interval: 1h
    compaction_interval: 5m
    retention_delete_worker_count: 500
    retention_enabled: true
    shared_store: s3
    working_directory: /data/compactor
  config:  
      schema_config:
        configs:
        - from: 2020-05-15
          store: boltdb-shipper
          object_store: s3
          schema: v11
          index:
            period: 24h
            prefix: loki_index_
        
      storage_config:
        aws:
          region: us-east-1
          bucketnames: grafana-loki-bucket
          s3forcepathstyle: false
          shared_store: s3
          cache_ttl: 24h
  serviceAccount:
    create: true
    name: loki-sa
    annotations:
       eks.amazonaws.com/role-arn: "arn:aws:iam::xxxxxx:role/grafana-loki-role"
  write:
     replicas: 2
  read:
    replicas: 1

promtail:
  enabled: true
  config:
    server:
      http_listen_port: 9080
      grpc_listen_port: 0
    positions:
      filename: /promtail/positions.yaml
    clients:
      - url: http://loki:3100/loki/api/v1/push
    scrape_configs:
      - job_name: kubernetes-pods
        kubernetes_sd_configs:
          - role: pod
        pipeline_stages:
          - docker: {}
          - cri: {}
          - json:
              expressions:
                severity: level
                timestamp: ts
                traceId: trace_id
          - replace:
              source: traceId
              target_label: traceID
              regex: "(.*)"
          - drop:
              source: traceId
        relabel_configs:
          - source_labels: [__meta_kubernetes_namespace]
            action: replace
            target_label: namespace
          - source_labels: [__meta_kubernetes_pod_name]
            action: replace
            target_label: pod
          - source_labels: [__meta_kubernetes_pod_container_name]
            action: replace
            target_label: container
          - source_labels: [__meta_kubernetes_pod_uid]
            action: replace
            target_label: pod_uid
          - action: labelmap
            regex: __meta_kubernetes_pod_label_(.+)

    extraVolumes:
      - name: promtail-positions
        emptyDir: {}
    extraVolumeMounts:
      - name: promtail-positions
        mountPath: /promtail


grafana:
    enabled: true
)

grafana svc has been exposed as a Load balancer and the loki datasource was added by default and there isn't an option change the loki URL.

checking the loki svc, grafana and loki pods but didn't find any issues

Hi @laboyes - Could you pls provide a response for this?