Fatal error: Uncaught TypeError: array_intersect(): Argument #1 ($array) must be of type array, null given in /var/www/html/ijiem/classes/security/authorization/OjsIssueRequiredPolicy.inc.php:54 Stack trace: #0 /var/www/html/ijiem/classes/security/authorization/OjsIssueRequiredPolicy.inc.php(54): array_intersect() #1 /var/www/html/ijiem/lib/pkp/classes/security/authorization/DataObjectRequiredPolicy.inc.php(77): OjsIssueRequiredPolicy->dataObjectEffect() #2 /var/www/html/ijiem/lib/pkp/classes/security/authorization/AuthorizationDecisionManager.inc.php(196): DataObjectRequiredPolicy->effect() #3 /var/www/html/ijiem/lib/pkp/classes/security/authorization/AuthorizationDecisionManager.inc.php(125): AuthorizationDecisionManager->_decidePolicySet() #4 /var/www/html/ijiem/lib/pkp/classes/handler/PKPHandler.inc.php(313): AuthorizationDecisionManager->decide() #5 /var/www/html/ijiem/pages/issue/IssueHandler.inc.php(38): PKPHandler->authorize() #6 /var/www/html/ijiem/lib/pkp/classes/core/PKPRouter.inc.php(387): IssueHandler->authorize() #7 /var/www/html/ijiem/lib/pkp/classes/core/PKPPageRouter.inc.php(246): PKPRouter->_authorizeInitializeAndCallRequest() #8 /var/www/html/ijiem/lib/pkp/classes/core/Dispatcher.inc.php(144): PKPPageRouter->route() #9 /var/www/html/ijiem/lib/pkp/classes/core/PKPApplication.inc.php(362): Dispatcher->dispatch() #10 /var/www/html/ijiem/index.php(68): PKPApplication->execute() #11 {main} thrown in /var/www/html/ijiem/classes/security/authorization/OjsIssueRequiredPolicy.inc.php on line 54