Exchange 2013 OWA,Async,And OA error MsExchange BackEndRehydration event id 3002

Hi team,

I had issue in My Exchange system.

I had two Exchange 2013 muli role with CAS and MBX

Server A had no problem connection when client access OWA directly (https://servernamefqdn/owa)

but, theres issue when I pointing to server B OWA (https://serverBfqdn/owa). its same when outlook connect (using OA ),and Aysnc connection.

when I failed to connect OWA, theres event id 3002 MsExchange BackEndRehydration event id 3002.

the error show at Server A ( server at a good condition )

heres the error

Thanks