Accidentally save as index.php with other file

Dear support officer,

i accidentally save as index.php file with other file on the remote and local server.

I tried to copy index.php file from the template zip file but and error "restricted access" appears as I type my url: pertaminawa.com.au

Please help

Delete that bad file from server first if you can not do it using your FTP client , then use hosting file manager, if needed change CHMOD of that file to 777 (-if deletion is banned by access rights).

Then copy original file, but also it may be that directory access right are forbidding that so change then CHMOD of template directory to 777 ,then copy.

Thank you it worked.