I migrated my site over and not get a problem
Warning: require_once(): open_basedir restriction in effect. File(/home/httpd/mytestserver.co.uk/mysite/httpdocs/wp-content/plugins/custom-content-type-manager/fields/text.php) is not within the allowed path(s):
The path it is looking for is on the dev server. How can I find and change this?
For anyone who will have this problem, replace the paths, put it in your themes functions.php and refresh browser:
Credit goes to https://gist.github.com/shoreline-chrism/1a8de1588ed67247ab03#file-wp-cctm-path-fix-php