Fatal error: Uncaught InvalidArgumentException: Passed value cannot be an array in /homepages/9/d909200721/htdocs/ojs-3.3/lib/pkp/lib/vendor/danielstjules/stringy/src/Stringy.php:45 Stack trace: #0 /homepages/9/d909200721/htdocs/ojs-3.3/lib/pkp/lib/vendor/danielstjules/stringy/src/Stringy.php(73): Stringy\Stringy->__construct(Array, NULL) #1 /homepages/9/d909200721/htdocs/ojs-3.3/lib/pkp/classes/core/PKPString.inc.php(160): Stringy\Stringy::create(Array) #2 /homepages/9/d909200721/htdocs/ojs-3.3/cache/t_compile/a95e9f20492587d73a4f35fa465ca6ee809b9709^c2055d14f27582f3361894f4184ce1a4c0497385_0.app.frontendpagessearchAuthor.php(58): PKPString::substr(Array, 0, 1) #3 /homepages/9/d909200721/htdocs/ojs-3.3/lib/pkp/lib/vendor/smarty/smarty/libs/sysplugins/smarty_template_resource_base.php(123): content_63c5ca20833ec5_50741010(Object(Smarty_Internal_Template)) #4 /homepages/9/d909200721/htdocs/ojs-3.3/lib/pkp/lib/vendor/smarty/smarty/libs/sysplugins/smarty_template_compiled.php(114): Smarty_Template_Resource_Base->getRenderedT in /homepages/9/d909200721/htdocs/ojs-3.3/lib/pkp/lib/vendor/danielstjules/stringy/src/Stringy.php on line 45