Warning: fopen(/config/app/revista-paulus-files/usageStats/usageEventLogs/usage_events_20240507.log): Failed to open stream: Permission denied in /var/www/html/lib/pkp/classes/observers/listeners/LogUsageEvent.php on line 103

Fatal error: Uncaught TypeError: flock(): Argument #1 ($stream) must be of type resource, bool given in /var/www/html/lib/pkp/classes/observers/listeners/LogUsageEvent.php:104 Stack trace: #0 /var/www/html/lib/pkp/classes/observers/listeners/LogUsageEvent.php(104): flock(false, 2) #1 /var/www/html/lib/pkp/classes/observers/listeners/LogUsageEvent.php(54): PKP\observers\listeners\LogUsageEvent->logUsageEvent('{"time":"2024-0...') #2 /var/www/html/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Events/Dispatcher.php(441): PKP\observers\listeners\LogUsageEvent->handle(Object(APP\observers\events\UsageEvent)) #3 /var/www/html/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Events/Dispatcher.php(249): Illuminate\Events\Dispatcher->Illuminate\Events\{closure}('APP\\observers\\e...', Array) #4 /var/www/html/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Foundation/helpers.php(451): Illuminate\Events\Dispatcher->dispatch('APP\\observers\\e...') #5 /var/www/html/pages/article/ArticleHandler.php(502): event(Object(APP\observers\events\UsageEvent)) #6 [internal function]: APP\pages\article\ArticleHandler->download(Array, Object(APP\core\Request)) #7 /var/www/html/lib/pkp/classes/core/PKPRouter.php(334): call_user_func(Array, Array, Object(APP\core\Request)) #8 /var/www/html/lib/pkp/classes/core/PKPPageRouter.php(277): PKP\core\PKPRouter->_authorizeInitializeAndCallRequest(Array, Object(APP\core\Request), Array, false) #9 /var/www/html/lib/pkp/classes/core/Dispatcher.php(165): PKP\core\PKPPageRouter->route(Object(APP\core\Request)) #10 /var/www/html/lib/pkp/classes/core/PKPApplication.php(388): PKP\core\Dispatcher->dispatch(Object(APP\core\Request)) #11 /var/www/html/index.php(21): PKP\core\PKPApplication->execute() #12 {main} thrown in /var/www/html/lib/pkp/classes/observers/listeners/LogUsageEvent.php on line 104