There could be a error message at VAMI:
"File system /storage/log has run out of storage space. Increase the size of disk /storage/log."
After checking no log bundle is left under /storage/log/, the space is still almost full.
To check and remove log bundles for space, see /storage/log becomes 100% full when exporting the vCenter Appliance log bundles.
df -h
cd /storage/log
find ./ -type f -mtime +60 -exec ls -l {} \; | cut -d " " -f 6-15
find ./ -type f -mtime +60 -exec rm {} \;