Error when upgrade ojs 3.2.1.3 to 3.3.0.6

Dear all,
We have ojs 3.2.1.3 and were planning to upgrade to ojs 3.3.0.6, but when after changing the files to ojs 3.3.0.6 it displays error 500 and the following error_log:

[19-Jun-2021 14:20:25 Asia/Jakarta] PHP Fatal error:  Uncaught Error: Call to a member function getConnection() on null in /home/XXX/public_html/pubs/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Capsule/Manager.php:74
Stack trace:
#0 /home/XXX/public_html/pubs/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Capsule/Manager.php(200): Illuminate\Database\Capsule\Manager::connection()
#1 /home/XXX/public_html/pubs/lib/pkp/classes/db/DAO.inc.php(65): Illuminate\Database\Capsule\Manager::__callStatic('raw', Array)
#2 /home/XXX/public_html/pubs/lib/pkp/classes/context/ContextDAO.inc.php(63): DAO->retrieve('SELECT * FROM j...', Array)
#3 /home/XXX/public_html/pubs/lib/pkp/classes/core/PKPRouter.inc.php(252): ContextDAO->getByPath('ijabis')
#4 /home/XXX/public_html/pubs/lib/pkp/classes/core/PKPRequest.inc.php(760): PKPRouter->getContext(Object(Request), 1)
#5 /home/XXX/public_html/pubs/classes/core/Request.inc.php(64): PKPRequest->_delegateToRouter('getContext', 1)
#6 /home/XXX/public_html/pubs/lib/pkp in /home/XXX/public_html/pubs/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Capsule/Manager.php on line 74

Please help to solve this error, many thanks

Hi @eddhie

It seems that the issue you have reported is similar to this one:

Could you please give a try with the solution recommended from that thread?

Best,
Israel