Sitemap construction error

[Omeka]

Someone could tell me how to solve the problem of creating a Sitemap, since when I click on "Even if you select no, you can still manually generate the sitemap-> The sitemap will be accessed by search engines via this URL", I see this error : 'Class' vB5_Exception_404 'not found'

[In Omnibus]

Have you created a sitemap? If not you'll likely get a "not found" error.

In the AdminCP under XML Options you need to click on the "Build Sitemap" button.

Then your URL should point to the sitemap.

[Omeka]

Have you created a sitemap? If not you'll likely get a "not found" error.

In the AdminCP under XML Options you need to click on the "Build Sitemap" button.

Then your URL should point to the sitemap.

I followed this procedure, but when I go to create it it sends me the error.

[Wayne Luke]

What are the contents of the /core/store_sitemap/ directory? Is this directory chmod 0777 recursively?

[Omeka]

What are the contents of the /core/store_sitemap/ directory? Is this directory chmod 0777 recursively?

There is only the index.html file and the folder has CHMOD permissions to 0777