You have a Management Center (MC) appliance showing the alert message below.
/core has exceeded WARNING level of 95.0%, current usage is 23.56545584867562%
Yet the storage at that time is not at 95% utilized
STORAGE:StorageUsage [name=/core, total=10434699264, used=2458984448, type=hrStorageFixedDisk, uom=bytes]
The issue is not related to any problem with the disk or no space to the disk.
Backup the MC and run the below command from command line interface:
service rebuild-repository-index
NOTE: Your MC must be on 1.11.1.2 or higher release to run this command.