Ross here is the response from the hosting provider. The problem seem to be with some of the Oxwall files as mentioned in the error log:
[18-Mar-2016 16:40:29] PHP Warning: PHP Startup: Unable to load dynamic library '/usr/php/54/usr/lib64/php/modules/imagick.so' - /usr/php/54/usr/lib64/php/modules/imagick.so: undefined symbol: zend_new_interned_string in Unknown on line 0
[18-Mar-2016 16:40:29] PHP Notice: Use of undefined constant __DIR__ - assumed '__DIR__' in /home1/datadove/public_html/ow_libraries/vendor/autoload.php on line 5
[18-Mar-2016 16:40:29] PHP Warning: require_once(__DIR__/composer/autoload_real.php) [<a href='function.require-once'>function.require-once</a>]: failed to open stream: No such file or directory in /home1/datadove/public_html/ow_libraries/vendor/autoload.php on line 5
[18-Mar-2016 16:40:29] PHP Fatal error: require_once() [<a href='function.require'>function.require</a>]: Failed opening required '__DIR__/composer/autoload_real.php' (include_path='.:/usr/php/54/usr/lib64:/usr/php/54/usr/share/pear') in /home1/datadove/public_html/ow_libraries/vendor/autoload.php on line 5
Will you be able to take a look now and fix them?
Failed loading /usr/php/54/usr/lib64/php/modules/ZendGuardLoader.so: /usr/php/54/usr/lib64/php/modules/ZendGuardLoader.so: undefined symbol: zend_new_interned_stringStatus: 500 Internal Server ErrorContent-type: text/html
Look at the warning you sent us:
PHP Warning: PHP Startup: Unable to load dynamic library '/usr/php/54/usr/lib64/php/modules/imagick.so' - /usr/php/54/usr/lib64/php/modules/imagick.so: undefined symbol: zend_new_interned_string in Unknown on line 0
seems like it is the same, you need to contact your hosting provider to resolve the issue with the
undefined symbol: zend_new_interned_string
I'm not getting appropriate support from hosting provider as they claims there are no errors on their servers and if it would have been a wordpress install then they provide exclusive support on the coding.
I asked them to involve higher level support personnel to which they confirmed the ticket has been escalated and someone will reply me via email. Though, i did not get any response yet. Never thought Bluehost support would be giving me such nightmares.