When selected the file upload option in the file manager I get that error.
I am using the great-site.net subdomain.
I am on guest PC so Filezilla is not an option.
I am confident you can duplicate the error by creating new account and uploading text file in file manager.
I built the file directory browser “index.php” by using the file edit mode.
Thank you for the hosting service.
I am grateful. kind of sort of.
Understandable, but OP is using a guest session to interact with a hosted website of OP’s own. Not really secure, but if that’s what the OP does, OP can continue.
To be honest, I didn’t know this existed. That’s why I suggested my FTP manager. Besides, even if I did know, the possibility of the app running on a guest session is low.