I am in the first time of install Filr. I am deploying a large deployment of version 1.2 all appliance are running Filr-, Filrsearch-, MySQL- and I have configured MySQL and Filesearch following installation guide but when I run Filr confuguration then it start with Database configuration and I can connect to MySQL server then it prompt Filesearch configuration dialog box I key in Filesearch details and click Next then the "Unable to connect to the Search Appliance Server." (as picture below.) appear.

I have rechecked my Filr and Filesearch configuration from installation guideline and nothing wrong. I have tried reinstall but still same issue. Someone please advise me.