freeradius / ntopng error

[federicop]

hi,
after upgrade to 2.5.1 i have the following errors

Free radus login webgui error
php-fpm 91175 /index.php: Error during RADIUS authentication : sendto: Can't assign requested address

ntopgn service does not start
ntopng 32256 [Redis.cpp:99] ERROR: Connection error [Can't assign requested address

help!