dockerzhang opened a new issue #5918: pop up "Templating init failed " when querying topics on grafana dashboard URL: https://github.com/apache/pulsar/issues/5918 **Describe the bug** version: 2.4.2 bug: pop up "Templating init failed " when querying topics on grafana dashboard, deployed by kubernetes. **To Reproduce** Steps to reproduce the behavior: 1. Go to 'http://k8s_node_ip:grafana_node_port/dashboard/file/topic.json?refresh=5s&orgId=1' 2. See error 
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