^{Originally posted by chunkyen January 15, 2026}
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Ok, I found the culprit after examining the management log files.
It is related to backup provider:

ERROR [c.c.a.AlertManagerImpl] (CapacityChecker:[ctx-1be179aa]) (logid:93156341) Exception in CapacityChecker com.cloud.utils.exception.CloudRuntimeException: Failed to find backup provider by the name: nas, networker
I tried to add multiple backup provider as shown in the helper text, but it resulted in the above error and also somehow affected the CapcityChecker that is responsible to display the stats on the dashboard. Removing it solves the issue.