I uploaded a ready-made website template using filezilla. I encountered an error in the header when I entered the site. What should I do? i use windows hosting and plesk panel
Maybe you had probably uploaded template with a root connection, these permision doesn't authorize web client to see files owned by root.
You may use dedicated FTP client for uploading files or checking files/directory owners.
Fixing it on Linux servers by SSH root command: chown -R edipcan:psaserv /var/www/vhosts/yourdomainname.com/httpdocs/*
Solvig this for Windows : you can use Plesk File Manager https://support.plesk.com/hc/en-us/articles/213407189-How-to-manage-file-directory-permissions-via-Plesk-File-Manager