I've just gone through the process of upgrading to the latest version (4.7.4) of Invision, which has necessitated an upgrade of PHP to version 8. Along with that, I had to recompile the PECL Redis library. Everything seemed to be fine, until I then logged into the admin CP and was presented with a red error message saying that the cache (via Redis) isn't working.
Having reviewed the settings, they were correct, so I re-saved them. I then checked the "Get Support" page to see if there was anything shown there, but it says that the cache is fine...
So what should I be doing here? Which of the two messages is correct, because they can't both be...