Exception printing is disabled by default for security reasons.
Error log record number: ******
Mostly for magento sites you face this error.
In this case you need to check following steps.
Go to folder /errors/
Change local.xml.sample to local.xml
After this change you can see few more errors.
Then Open magento/lib/Zend/Cache/Backend/File.php and search
protected $_options = array(
'cache_dir' => 'null',
and Change it to:
protected $_options = array(
'cache_dir' => 'tmp/',
Save the changes.
create tmp folder under root magento folder.
This should fix the issue.
