Module Command Error cPanel API Response: You cannot create a session for the user “cpuser” because they do not exist.

[globaliweb]

Hello,

I am facing issue while creating a cPanel account from WHMCS admin area. When i creating a new cPanel account it's showing successfully (but actually it is not creating) 

After the message show successful account created, i click on login to cPanel it's showing this error: Module Command Error
cPanel API Response: You cannot create a session for the user “cpuser” because they do not exist.

WHMCS Version: 7.1.2  and Server set to default with root user permission

On the servers page (setup>>Products/services>>Servers) i can login to WHM successfully by click on the Login to WHM button

further when i go to server edit page and test connection: it's show me error FAILED: Array While username and password same as previous page i login successfully.