Imap mail setting not working in nextcloud 19.02

Hi guys,
i have installed new nextcloud 19.02 on my centos 8
all app working good i am trying to configure my
mail in maill app but every time showing me [

Unexpected error during account creation

kindly help me in this i am using manual method because
auto method not working


Please describe IN DETAIL how the server settings of your provider should look like, what you’ve entered in the configuration form (IN DETAIL) and which related log entries in the Nextcloud log you can found.