Unable to configure Plex server

I am unable to configure Plex server on my WD “My Cloud Home”

On the initial configuration screen, it ask for permission to create new “Plex” folder on root folder and once approve, it stuck and gives error " This page isn’t working. prod-0bc596a5c73ceb7.mycloud.com is currently unable to handle this request."

Hi,

You could refer to the following link: https://support-en.wd.com/app/answers/detail/a_id/28407