Error : Permission denied

Hello everybody,

I have a problem entering my FTP since today, here is my error:

Permission insuffisante
Code d'erreur : 3
Message d'erreur du serveur : Permission denied

Because even if you change file permissions or whatever, it doesn't work. I also tested by restarting the PC and the modem, but nothing either. And honestly, I don't have enough knowledge in this area.
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Version WinSCP 5.15.9
Windows 10
SFTP
Commander
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Permission denied.
Error code: 3
Error message from server: Permission denied
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To know that I have exactly the same problem on FileZilla
Anyone have an idea please? Thank you.

You do not have write permissions to /home/egamesis/public_html/img.

If the folder is owned by your account, add write permissions yourself.
https://winscp.net/eng/docs/ui_properties
https://winscp.net/eng/docs/task_properties

Otherwise you have to contact the folder owner, or the server administrator.