Samba can't modify into text files

Hi,

For samba share I use the following Manjaro Samba parameters, issues since 1 or 2 months

Manjaro Samba parameter smb.conf

[global]
   workgroup = WORKGROUP
   dns proxy = no
   log file = /var/log/samba/%m.log
   max log size = 1000
   client min protocol = SMB2
   server role = standalone server
   passdb backend = tdbsam
   obey pam restrictions = yes
   unix password sync = yes
   passwd program = /usr/bin/passwd %u
   passwd chat = *New*UNIX*password* %n\n *ReType*new*UNIX*password* %n\n *passwd:*all*authentication*tokens*updated*successfully*
   pam password change = yes
   map to guest = Bad Password
   usershare allow guests = yes
   name resolve order = lmhosts bcast host wins
   security = user
   guest account = nobody
   usershare path = /var/lib/samba/usershare
   usershare max shares = 100
   usershare owner only = yes
   force create mode = 0070
   force directory mode = 0070
   load printers = no
   printing = bsd
   printcap name = /dev/null
   disable spoolss = yes
   show add printer wizard = no

[homes]
   comment = Home Directories
   browseable = no
   read only = yes
   create mask = 0700
   directory mask = 0700
   valid users = %S

[printers]
   comment = All Printers
   browseable = no
   path = /var/spool/samba
   printable = yes
   guest ok = no
   read only = yes
   create mask = 0700

[print$]
   comment = Printer Drivers
   path = /var/lib/samba/printers
   browseable = yes
   read only = yes
   guest ok = no

I can copy / paste / delete / create / rename files and folders with samba but I can’t modify a simple text file into the samba server.

I search and don’t find any solution.
KDE desktop up to date, stable branch.

[nls@lap ~]$ pamac search --installed smb
python-pysmbc                           1.0.23-2  extra 
    Python 3 bindings for libsmbclient
libsmbios                               2.4.3-3   extra 
    A library for providing access to as much BIOS information as possible
gvfs-smb                                1.48.1-1  extra 
    Virtual filesystem implementation for GIO (SMB/CIFS backend; Windows client)
smbclient                               4.15.3-1  extra 
    Tools to access a server's filespace and printers via SMB
[nls@lap ~]$ pamac search --installed samba
samba                                   4.15.3-1  extra 
    SMB Fileserver and AD Domain server

[nls@lap ~]$ systemctl status smb.service
● smb.service - Samba SMB Daemon
     Loaded: loaded (/usr/lib/systemd/system/smb.service; enabled; vendor preset: disabled)
     Active: active (running) since Sat 2021-12-18 18:37:12 CET; 4min 10s ago
       Docs: man:smbd(8)
             man:samba(7)
             man:smb.conf(5)
   Main PID: 1190 (smbd)
     Status: "smbd: ready to serve connections..."
      Tasks: 3 (limit: 9147)
     Memory: 13.8M
        CPU: 67ms
     CGroup: /system.slice/smb.service
             ├─1190 /usr/bin/smbd --foreground --no-process-group
             ├─1193 /usr/bin/smbd --foreground --no-process-group
             └─1194 /usr/bin/smbd --foreground --no-process-group

déc. 18 18:37:12 lap systemd[1]: Starting Samba SMB Daemon...
déc. 18 18:37:12 lap smbd[1190]: [2021/12/18 18:37:12.108205,  0] ../../source3/smbd/server.c:1739(main)
déc. 18 18:37:12 lap smbd[1190]:   smbd version 4.15.3 started.
déc. 18 18:37:12 lap smbd[1190]:   Copyright Andrew Tridgell and the Samba Team 1992-2021
déc. 18 18:37:12 lap smbd[1190]: [2021/12/18 18:37:12.110330,  0] ../../lib/param/loadparm.c:1814(lpcfg_do_service_parameter)
déc. 18 18:37:12 lap smbd[1190]:   Global parameter security found in service section!
déc. 18 18:37:12 lap systemd[1]: Started Samba SMB Daemon.
[nls@lap ~]$ 

Thanks in advance for your help.