% Error, insufficient diskspace to generate a support bundle, please delete nonessential files from the file-store
df -h |egrep "Mounted on|/image"
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/nsx-image 42G 40G 0 100% /image
get files
del file <file_name>
If there are no unnecessary files in /image, please open a case with Broadcom Support and reference this KB article.
Follow instructions here to create support case: Creating and managing Broadcom support cases