Hi,
I got another PHP error when upgraded to - 3.1.2.2 version of OJS
[Fri Dec 06 09:50:23.417549 2019] [php7:error] [pid 20541] [client 10.25.8.2:42844] PHP Fatal error: Uncaught RuntimeException: Unexpected data in output buffer. Maybe you have characters before an opening <?php tag? in /var/www/ojs/lib/pkp/lib/vendor/slim/slim/Slim/App.php:621\nStack trace:\n#0 /var/www/ojs/lib/pkp/lib/vendor/slim/slim/Slim/App.php(317): Slim\App->finalize(Object(APIResponse))\n#1/var/www/ojs/lib/pkp/classes/core/APIRouter.inc.php(109): Slim\App->run()\n#2 /var/www/ojs/lib/pkp/classes/core/Dispatcher.inc.php(134): APIRouter->route(Object(Request))\n#3 /var/www/ojs/lib/pkp/classes/core/PKPApplication.inc.php(252): Dispatcher->dispatch(Object(Request))\n#4 /var/www/ojs/index.php(68): PKPApplication->execute()\n#5 {main}\n thrown in /var/www/ojs/lib/pkp/lib/vendor/slim/slim/Slim/App.php on line 621, referer: http://xxx.xxx.ca/index.php/yptc/submissions
please help
thank you
-P