@Wang, Jane Firstly, apologies for the delay in responding here and any inconvenience this issue may have caused.
If the issue still persists, I would recommended refer this Troubleshoot Azure Files problems in Linux (SMB) (This article lists common problems that are related to Azure Files when you connect from Linux clients. It also provides possible causes and resolutions for these problems)
If the issue still persists, Please share the screen shot of the error message.
How to mount an NFS file share
Hope this helps!
Kindly let us know if the above helps or you need further assistance on this issue.
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