Could not activate | WordPress.org

Hi,

I was using the pro version, but the license expired.
I’m trying to use the free version, but there’s a problem.

#### Console Message. ####

[user]$ wp plugin activate wp-to-buffer
Warning: Could not activate the ‘wp-to-buffer’ plugin.

I deleted the pro version, but the free version is not activated.

#### SOLVED ####
CACHE PLUGIN PROBLEM 🙁 ;;;;