Object is remote in mounted CIFS on Ubuntu

I am struggling to mount a CIFS shared disk on Lubuntu 20.04. It can be accessed by

://myserver/files

. The command I am using for mounting is:

sudo mount -t cifs //myserver/files /mnt/remote_disk -o username=yyyy,domain=hhhh,password=xxxx,vers=1.0,nodfs -v

Up to here, everything OK. The disk is mounted. But if I want to access the directory:

/mnt/remote_disk/parent1/parent2/son

It prompts:

bash: cd: /remote_disk/parent1/parent2/son: Object is remote

whereas if I step back one level:

/remote_disk/parent1/parent2

there is no problem. I guess this is not a problem of permissions as I already checked that. In fact, if I configure Nautilus: 1. Open Nautilus. 2. From the File menu, select Connect to Server. 3. Input

://myserver/files

I can access the files and folder within

/parent2/son

directory, modify and read them. Do you guys have any clue of what I might be missing? The dmesg outputs: CIFS VFS: cifs_mount failed w/return code = -66