Fatal error: Uncaught Error: Class 'IntlDateFormatter' not found in C:\xampp\htdocs\ojs-3.3.0-22\lib\pkp\lib\vendor\php81_bc\strftime\src\php-8.1-strftime.php:60 Stack trace: #0 C:\xampp\htdocs\ojs-3.3.0-22\lib\pkp\lib\vendor\php81_bc\strftime\src\php-8.1-strftime.php(201): PHP81_BC\{closure}(Object(DateTime), '%B') #1 [internal function]: PHP81_BC\{closure}(Array) #2 C:\xampp\htdocs\ojs-3.3.0-22\lib\pkp\lib\vendor\php81_bc\strftime\src\php-8.1-strftime.php(180): preg_replace_callback('/(?<!%)%([_#-]?...', Object(Closure), '%B 31, %Y') #3 C:\xampp\htdocs\ojs-3.3.0-22\lib\pkp\lib\vendor\smarty\smarty\libs\plugins\modifier.date_format.php(85): PHP81_BC\strftime('%B 31, %Y', Object(DateTime)) #4 C:\xampp\htdocs\ojs-3.3.0-22\cache\t_compile\8e83ebdb8269d87c220b1bbcd41301b5e2fbfa50^9baf284e70cfc445f6754f39de7e2017a0a19d66_0.plugins-11-plugins-generic-pdfJsViewer-generic-pdfJsViewer.submissionGalley.tpl.php(39): smarty_modifier_date_format('2021-08-31', '%B 31, %Y') #5 C:\xampp\htdocs\ojs-3.3.0-22\lib\pkp\lib\vendor\smarty\smar in C:\xampp\htdocs\ojs-3.3.0-22\lib\pkp\lib\vendor\php81_bc\strftime\src\php-8.1-strftime.php on line 60