Problem when trying to create new issues

I have an issue that recently appeared. We can no longer create issues for our journals and am getting the following error when attempting to create one, “Failed Ajax request or invalid JSON returned.”

When I pull up the error log I found this fatal error.

PHP Fatal error: Uncaught ArgumentCountError: Too few arguments to function IssueForm::initData(), 0 passed in /var/www/ojs/classes/controllers/grid/issues/IssueGridHandler.inc.php on line 159 and exactly 1 expected in /var/www/ojs/controllers/grid/issues/form/IssueForm.inc.php:119\nStack trace:\n#0 /var/www/ojs/classes/controllers/grid/issues/IssueGridHandler.inc.php(159): IssueForm->initData()\n#1 /var/www/ojs/classes/controllers/grid/issues/IssueGridHandler.inc.php(132): IssueGridHandler->editIssueData(Array, Object(Request))\n#2 /var/www/ojs/lib/pkp/classes/core/PKPRouter.inc.php(372): IssueGridHandler->addIssue(Array, Object(Request))\n#3 /var/www/ojs/lib/pkp/classes/core/PKPComponentRouter.inc.php(256): PKPRouter->_authorizeInitializeAndCallRequest(Array, Object(Request), Array)\n#4 /var/www/ojs/lib/pkp/classes/core/Dispatcher.inc.php(134): PKPComponentRouter->route(Object(Request))\n#5 /var/www/ojs/lib/pkp/classes/core/PKPApplication.inc.php(247): Dispatcher->dispatch(Object(Request))\n#6 /var/www/ojs/index.php(68): PKPApplica in /var/www/ojs/controllers/grid/issues/form/IssueForm.inc.php on line 119, referer: http://ojs3.equinoxpub.com/index.php/LST/manageIssues

Any help would be greatly appreciated.