Admin Dashboard Error

Question

After migrating am facing some error like as shown below, How to solve those error?

Here the error on admin page

Fatal error: Uncaught Error: Function name must be a string in /home/pataak/public_html/app/code/core/Mage/Core/Model/Layout.php:555
Stack trace: 
#0 /home/pataak/public_html/app/code/core/Mage/Core/Controller/Varien/Action.php(390): Mage_Core_Model_Layout->getOutput() 
#1 /home/pataak/public_html/app/code/core/Mage/Adminhtml/controllers/IndexController.php(82): Mage_Core_Controller_Varien_Action->renderLayout() 
#2 /home/pataak/public_html/app/code/core/Mage/Core/Controller/Varien/Action.php(418): Mage_Adminhtml_IndexController->loginAction() 
#3 /home/pataak/public_html/app/code/core/Mage/Core/Controller/Varien/Router/Standard.php(254): Mage_Core_Controller_Varien_Action->dispatch('login') 
#4 /home/pataak/public_html/app/code/core/Mage/Core/Controller/Varien/Front.php(172): Mage_Core_Controller_Varien_Router_Standard->match(Object(Mage_Core_Controller_Request_Http)) 
#5 /home/pataak/public_html/app/code/core/Mage/Core/Model/App.php(365): Mage_Core_Controller_Varien_Front->dispatch() 
#6 /home/pataak/public_html/app/Mage.php(6 in /home/pataak/public_html/app/code/core/Mage/Core/Model/Layout.php on line 555

and Here the Front page error:

Fatal error: Allowed memory size of 33554432 bytes exhausted (tried to allocate 4096 bytes) in /home/pataak/public_html/lib/Less/Parser.php on line 2270

Answer 1

Seems like you are using php7.

1. In your cpanel goto php versions and select 5.x instead of php7.
2. For memory limit exception increase your memory limit from php.ini

Answer 2

If you are using WHM / cpanel then in WHM cpanel there is an option to do php multiphpini. There you can edit your corresponding version.

Check back at www.yourwebsite/phpinfo.php if the value changed.