I can't see the problem as open_basedir config looks like:
php_admin_value[open_basedir] = /opt:/opt/php70m/usr/lib64/php/modules/:/dev/urandom:/home/domain/:/tmp/:/usr/share/pear/:/home/kloxo/client/domain/session/:/home/kloxo/httpd/script/:/home/kloxo/httpd/disable/:/usr/bin
Error in the web UI is:
file_exists(): open_basedir restriction in effect. File(/opt/php70m/usr/lib64/php/modules/../../../../../../home/ioncube/ioncube_loader_lin_7.0.so) is not within the allowed path(s): (/opt:/opt/php70m/usr/lib64/php/modules/:/dev/urandom:/home/domain/:/tmp/:/usr/share/pear/:/home/kloxo/client/domain/session/:/home/kloxo/httpd/script/:/home/kloxo/httpd/disable/:/usr/bin)
As you can see, i've even added whole /opt to open_basedir just for test.
Any help appreciated to help Blesta installed at least