Dear @Elon,
Thank you for reaching out to us.
We have thoroughly reviewed the issue; however, it appears that the error originates from the Elementor plugin files. Unfortunately, we are unable to provide a direct solution in this case.
As a workaround we recommend using the table layout, which allows you to modify, create, or remove any templates built with Elementor. Additionally, we suggest waiting for a short period and then checking again, as such issues can sometimes be caused by WordPress caching requests from plugins. These cached requests may take some time to clear.
Also you can think about submitting a support request through the official Elementor support forum:
https://wordpress.org/plugins/elementor/
Thank you for your understanding.
Best regards,
Jack Richardson
The 8Theme Team















