zzz_custom_url Missing provider. Does it exist?

Hello,

I get a warning in the status report which I cannot understand. This is what it says:

The following third party media providers found in existing media fields are currently missing from the system: zzz_custom_url. You must install the corresponding modules supporting the provider(s) to support them. See the Embedded Media Field module page for a listing of available modules.

You may be able to locate the missing provider(s) at one or more of the following project pages. Note that these are educated guesses, and may actually not be an existing Drupal project:

I've searched in the issue queue by zzz_custom_url with no result, and I can't see any configuration options to enable/disable this provider (suposing it exists)

Any help will be appreciated