Postgres An error occurred within the plugin

I’m use Grafana version 9.3.2 on Linux Mint 20
During the connection with Postgres plugin (PSQL installed on the same machine, with user and password checked and correct) I got the error in the subject “An error occurred within the plugin”.
I couldn’t found any log error (I’ve get a look to PSQL log but there’s no error) and in /var/log/ on the docker container where run Grafana Loki also no problem of any type