Planning Analytics

I recently installed PAW 2.1.16 on Linux Red Hat 8.

Installation is successful, setup url in Administrâtion Tool is OK, PA servers reached OK, all services are up and running.

When I try to access to portal, I always got this error :

In the wa-proxy log, I have many errors like this :
2026-01-16T12:04:35.072Z [0] - error: SEVERE: Redis client error
{
  stack: [
    'Error: connect EHOSTUNREACH 10.99.99.21:6379',
    '    at TCPConnectWrap.afterConnect [as oncomplete] (node:net:1611:16)'
  ]
}

Could you help me to fix this problem ?