Plesk Mobile Center erro Installation of extension has failed

Problema

Ao se tentar instalar a extensão Plesk Mobile Center do menu "Server Management > Extensions" do painel de controle Plesk Onyx, a mensagem de erro surge:

Installation of extension has failed
Failed
Installation of extension has failed

    Execution of /usr/local/psa/admin/plib/modules/plesk-mobile/scripts/post-install.php failed with exit code 1 and the output:
    SQLSTATE[HY000]: General error: 1 table "push_subscription" already exists

Causa:

Em breve registraremos.

Solução:

Em breve registraremos.