The script: sql/create_counts.sql do not work in PostgreSQL Database 11. 11 is the Version i use. I change the script into:
CREATE TABLE <your_wg_prefix_here>.betafeatures_user_counts (
feature character varying(255) NOT NULL,
"number" integer NOT NULL DEFAULT 0,
CONSTRAINT betafeatures_user_counts_pkey PRIMARY KEY (feature)
);
now it works.
bye.