Oops! Long story short, that’s one of the really common errors during our development in Laravel. Accroding to the documentation here:

Note: Cache tags are not supported when using the file or database cache drivers. Furthermore, when using multiple tags with caches that are stored “forever”, performance will be best with a driver such as memcached, which automatically purges stale records.

Just to change our cache driver from CACHE_DRIVER=file in .env to CACHE_DRIVER=array.

Save it and refresh the page, it works again.