Error "Create a custom page on your site and link to it from a navigation menu"

I can not create a custom page on my website.
I followed the instructions but when I press save, the following message always appears “The path field must contain only alphanumeric characters plus ‘.’, ‘/’, ‘-’, and ‘_’.”
I need help please.

I have used

OJS 3.4

Just enter the path without the part. So in your case just template.

Oh. Thank you so so… much