Fatal error: Uncaught InvalidArgumentException: Passed value cannot be an array in /var/www/revistas/revistamg/lib/pkp/lib/vendor/danielstjules/stringy/src/Stringy.php:45 Stack trace: #0 /var/www/revistas/revistamg/lib/pkp/lib/vendor/danielstjules/stringy/src/Stringy.php(73): Stringy\Stringy->__construct() #1 /var/www/revistas/revistamg/lib/pkp/classes/core/PKPString.inc.php(161): Stringy\Stringy::create() #2 /var/www/revistas/revistamg/cache/t_compile/42a7dee1cf95965a8e8ab44fdf42d398f8912bde^c2055d14f27582f3361894f4184ce1a4c0497385_0.app.frontendpagessearchAuthor.php(58): PKPString::substr() #3 /var/www/revistas/revistamg/lib/pkp/lib/vendor/smarty/smarty/libs/sysplugins/smarty_template_resource_base.php(123): content_66058a487ed351_07457200() #4 /var/www/revistas/revistamg/lib/pkp/lib/vendor/smarty/smarty/libs/sysplugins/smarty_template_compiled.php(114): Smarty_Template_Resource_Base->getRenderedTemplateCode() #5 /var/www/revistas/revistamg/lib/pkp/lib/vendor/smarty/smarty/libs/sysplugins/smarty_internal_template.php(21 in /var/www/revistas/revistamg/lib/pkp/lib/vendor/danielstjules/stringy/src/Stringy.php on line 45