I just realised I have VMVendor installed and I should have uninstalled this first. I don't know if this is affecting my problem. The directories for the VirtueMart Component have been removed during the uninstall in both the html directory and administrator directory.
There is no log directory in administrator. The error_log file has a timestamp of 2016.
I looked at our server logs ( public_html/administrator/error_log, public_html/error_log ) and the following is showing for several modules
Module compiled with module API=20131226
PHP compiled with module API=20100525
These options need to match
in Unknown on line 0
[12-Mar-2017 15:04:19 America/Denver] PHP Warning: PHP Startup: Unable to load dynamic library '/usr/php/56/usr/lib64/php/modules/pdo_pgsql.so' - /usr/php/56/usr/lib64/php/modules/pdo_pgsql.so: undefined symbol: pdo_handle_error in Unknown on line 0
[12-Mar-2017 15:04:19 America/Denver] PHP Warning: PHP Startup: magickwand: Unable to initialize module
Also for mailparse, OAuth, oci8 and uploadprogress - API's are the same for all modules