If you see this error at top of website page:

Warning: is_dir(): open_basedir restriction in effect. File(/) is not
within the allowed path(s):

Please do this:

Open control panel
Go to 'Domains and Websites'
Go to 'Websites'
Select the domain, click 'php config'
Disable " open_basedir' toggle button
Click 'SAVE' button at botton