Warning: Array to string conversion in /var/www/html/lib/pkp/classes/i18n/Locale.php on line 497

Warning: array_flip(): Can only flip string and integer values, entry skipped in /var/www/html/lib/pkp/classes/i18n/Locale.php on line 373

Fatal error: Uncaught TypeError: Illegal offset type in isset or empty in /var/www/html/lib/pkp/classes/template/PKPTemplateManager.php:1499 Stack trace: #0 [internal function]: PKP\template\PKPTemplateManager->displaySidebar() #1 /var/www/html/lib/pkp/classes/plugins/Hook.php(139): call_user_func_array() #2 /var/www/html/lib/pkp/classes/plugins/Hook.php(113): PKP\plugins\Hook::run() #3 /var/www/html/lib/pkp/classes/template/PKPTemplateManager.php(1793): PKP\plugins\Hook::call() #4 /var/www/html/cache/t_compile/e35ba3ad88c8e24bc4de57abe8230f54bf65149d^4dffb64063bb972c37e05619a2ccd9d0ea7473ac_0.app.frontendcomponentsfooter.tpl.php(29): PKP\template\PKPTemplateManager->smartyCallHook() #5 /var/www/html/lib/pkp/lib/vendor/smarty/smarty/libs/sysplugins/smarty_template_resource_base.php(123): content_67dfea37bb8b13_26132846() #6 /var/www/html/lib/pkp/lib/vendor/smarty/smarty/libs/sysplugins/smarty_template_compiled.php(114): Smarty_Template_Resource_Base->getRenderedTemplateCode() #7 /var/www/html/lib/pkp/lib/vendor/smarty/smarty/libs/sysplugins/smarty_internal_template.php(217): Smarty_Template_Compiled->render() #8 /var/www/html/lib/pkp/lib/vendor/smarty/smarty/libs/sysplugins/smarty_internal_template.php(386): Smarty_Internal_Template->render() #9 /var/www/html/cache/t_compile/e35ba3ad88c8e24bc4de57abe8230f54bf65149d^fcbc2cabc0d4dff6219d7e4b5d36c1363533cfd8_0.app.frontendpagesissue.tpl.php(56): Smarty_Internal_Template->_subTemplateRender() #10 /var/www/html/lib/pkp/lib/vendor/smarty/smarty/libs/sysplugins/smarty_template_resource_base.php(123): content_67dfea37b29829_66414399() #11 /var/www/html/lib/pkp/lib/vendor/smarty/smarty/libs/sysplugins/smarty_template_compiled.php(114): Smarty_Template_Resource_Base->getRenderedTemplateCode() #12 /var/www/html/lib/pkp/lib/vendor/smarty/smarty/libs/sysplugins/smarty_internal_template.php(217): Smarty_Template_Compiled->render() #13 /var/www/html/lib/pkp/lib/vendor/smarty/smarty/libs/sysplugins/smarty_internal_templatebase.php(238): Smarty_Internal_Template->render() #14 /var/www/html/lib/pkp/lib/vendor/smarty/smarty/libs/sysplugins/smarty_internal_templatebase.php(134): Smarty_Internal_TemplateBase->_execute() #15 /var/www/html/lib/pkp/classes/template/PKPTemplateManager.php(1378): Smarty_Internal_TemplateBase->display() #16 /var/www/html/pages/issue/IssueHandler.php(111): PKP\template\PKPTemplateManager->display() #17 [internal function]: APP\pages\issue\IssueHandler->current() #18 /var/www/html/lib/pkp/classes/core/PKPRouter.php(334): call_user_func() #19 /var/www/html/lib/pkp/classes/core/PKPPageRouter.php(278): PKP\core\PKPRouter->_authorizeInitializeAndCallRequest() #20 /var/www/html/lib/pkp/classes/core/Dispatcher.php(165): PKP\core\PKPPageRouter->route() #21 /var/www/html/lib/pkp/classes/core/PKPApplication.php(395): PKP\core\Dispatcher->dispatch() #22 /var/www/html/index.php(21): PKP\core\PKPApplication->execute() #23 {main} thrown in /var/www/html/lib/pkp/classes/template/PKPTemplateManager.php on line 1499