A lower level error occurred while refreshing NFS exports: Error running a command. cmd

Traceback when trying to use “Advanced Edit” on NFS share. Traceback occurs when hitting submit. Error occurs if “Enter manual export entries blow.” textbox is empty or if it has valid data.

Rockstor version is 3.8.16-8

Detailed step by step instructions to reproduce the problem

Navigate to Storage → File Sharing, NFS. Click Advanced Edit. Click submit.

Web-UI screenshot

Error Traceback provided on the Web-UI

Traceback (most recent call last): File "/opt/rockstor/src/rockstor/storageadmin/views/nfs_exports.py", line 138, in refresh_wrapper refresh_nfs_exports(exports) File "/opt/rockstor/src/rockstor/system/osi.py", line 472, in refresh_nfs_exports bind_mount(exports[e][0]['mnt_pt'], e) File "/opt/rockstor/src/rockstor/system/osi.py", line 442, in bind_mount run_command([MKDIR, '-p', export_pt]) File "/opt/rockstor/src/rockstor/system/osi.py", line 109, in run_command raise CommandException(cmd, out, err, rc) CommandException: Error running a command. cmd = ['/bin/mkdir', '-p', '/export/data/.data_201612310300']. rc = 1. stdout = ['']. stderr = ['/bin/mkdir: cannot create directory \xe2\x80\x98/export/data/.data_201612310300\xe2\x80\x99: Operation not permitted', '']