Error when add NFS

[antony4]

Error Validating Storage Provider: mount failure, server: 192.168.10.27, export: /mnt/kvm_virtual_images, nfs version: 3, returned state: 13

[dya]

My NFS server export settings. Since this is for a test environment, I've used wildcards for specifying NFS clients.
I hope this is helpful.

/mnt/nfs-iscsi *(rw,sync,no_subtree_check,all_squash,anonuid=0,anongid=0,insecure)

＜Reference＞
■NFSv3 File Shares
See the “NOTE” section at the URL below.
https://support.hpe.com/hpesc/public/docDisplay?docId=sd00007027en_us&page=GUID-07778212-ECE2-41DC-A130-1A6271833CA4.html

※Apologies if the machine translation is unclear.