Fatal error: Uncaught Error: Class "Smarty_Internal_ParseTree_Template" not found in C:\IIS\OJS\OJS_Web\test2.itinfras.com\lib\pkp\lib\vendor\smarty\smarty\libs\sysplugins\smarty_internal_templateparser.php:159 Stack trace: #0 C:\IIS\OJS\OJS_Web\test2.itinfras.com\lib\pkp\lib\vendor\smarty\smarty\libs\sysplugins\smarty_internal_smartytemplatecompiler.php(93): Smarty_Internal_Templateparser->__construct() #1 C:\IIS\OJS\OJS_Web\test2.itinfras.com\lib\pkp\lib\vendor\smarty\smarty\libs\sysplugins\smarty_internal_templatecompilerbase.php(466): Smarty_Internal_SmartyTemplateCompiler->doCompile() #2 C:\IIS\OJS\OJS_Web\test2.itinfras.com\lib\pkp\lib\vendor\smarty\smarty\libs\sysplugins\smarty_internal_templatecompilerbase.php(395): Smarty_Internal_TemplateCompilerBase->compileTemplateSource() #3 C:\IIS\OJS\OJS_Web\test2.itinfras.com\lib\pkp\lib\vendor\smarty\smarty\libs\sysplugins\smarty_template_compiled.php(184): Smarty_Internal_TemplateCompilerBase->compileTemplate() #4 C:\IIS\OJS\OJS_Web\test2.itinfras.com\lib\pkp\lib\vendor\smarty\smarty\libs\sysplugins\smarty_template_compiled.php(141): Smarty_Template_Compiled->compileTemplateSource() #5 C:\IIS\OJS\OJS_Web\test2.itinfras.com\lib\pkp\lib\vendor\smarty\smarty\libs\sysplugins\smarty_template_compiled.php(105): Smarty_Template_Compiled->process() #6 C:\IIS\OJS\OJS_Web\test2.itinfras.com\lib\pkp\lib\vendor\smarty\smarty\libs\sysplugins\smarty_internal_template.php(217): Smarty_Template_Compiled->render() #7 C:\IIS\OJS\OJS_Web\test2.itinfras.com\lib\pkp\lib\vendor\smarty\smarty\libs\sysplugins\smarty_internal_templatebase.php(238): Smarty_Internal_Template->render() #8 C:\IIS\OJS\OJS_Web\test2.itinfras.com\lib\pkp\lib\vendor\smarty\smarty\libs\sysplugins\smarty_internal_templatebase.php(134): Smarty_Internal_TemplateBase->_execute() #9 C:\IIS\OJS\OJS_Web\test2.itinfras.com\lib\pkp\classes\template\PKPTemplateManager.inc.php(1250): Smarty_Internal_TemplateBase->display() #10 C:\IIS\OJS\OJS_Web\test2.itinfras.com\lib\pkp\classes\form\Form.inc.php(200): PKPTemplateManager->display() #11 C:\IIS\OJS\OJS_Web\test2.itinfras.com\lib\pkp\classes\form\Form.inc.php(151): Form->fetch() #12 C:\IIS\OJS\OJS_Web\test2.itinfras.com\lib\pkp\classes\install\form\MaintenanceForm.inc.php(38): Form->display() #13 C:\IIS\OJS\OJS_Web\test2.itinfras.com\lib\pkp\classes\install\form\InstallForm.inc.php(123): MaintenanceForm->display() #14 C:\IIS\OJS\OJS_Web\test2.itinfras.com\lib\pkp\pages\install\InstallHandler.inc.php(49): InstallForm->display() #15 C:\IIS\OJS\OJS_Web\test2.itinfras.com\lib\pkp\classes\core\PKPRouter.inc.php(397): InstallHandler->index() #16 C:\IIS\OJS\OJS_Web\test2.itinfras.com\lib\pkp\classes\core\PKPPageRouter.inc.php(246): PKPRouter->_authorizeInitializeAndCallRequest() #17 C:\IIS\OJS\OJS_Web\test2.itinfras.com\lib\pkp\classes\core\Dispatcher.inc.php(144): PKPPageRouter->route() #18 C:\IIS\OJS\OJS_Web\test2.itinfras.com\lib\pkp\classes\core\PKPApplication.inc.php(360): Dispatcher->dispatch() #19 C:\IIS\OJS\OJS_Web\test2.itinfras.com\index.php(68): PKPApplication->execute() #20 {main} thrown in C:\IIS\OJS\OJS_Web\test2.itinfras.com\lib\pkp\lib\vendor\smarty\smarty\libs\sysplugins\smarty_internal_templateparser.php on line 159