Cache on layers doesn't work

[leolami]

Checklist

• [x] I've searched through the existing issues and this bug has never been reported before

Subject of the issue

The cache is created, apparently

But when I load the map the cache layer is not visible

Steps to reproduce

No need to reproduce the problem

Environment

• g3w-admin: version
• g3w-client: version
• browser: name
• operating system: name and version (desktop or mobile)

Link to your project

No response

Additional info

No response