Fatal error: Uncaught Error: Class 'IntlDateFormatter' not found in /home/onlinejournal/public_html/lib/pkp/lib/vendor/php81_bc/strftime/src/php-8.1-strftime.php:61 Stack trace: #0 /home/onlinejournal/public_html/lib/pkp/lib/vendor/php81_bc/strftime/src/php-8.1-strftime.php(202): PHP81_BC\{closure}(Object(DateTime), '%B') #1 [internal function]: PHP81_BC\{closure}(Array) #2 /home/onlinejournal/public_html/lib/pkp/lib/vendor/php81_bc/strftime/src/php-8.1-strftime.php(181): preg_replace_callback('/(?<!%)%([_#-]?...', Object(Closure), '%B %e, %Y') #3 /home/onlinejournal/public_html/lib/pkp/lib/vendor/smarty/smarty/libs/plugins/modifier.date_format.php(85): PHP81_BC\strftime('%B %e, %Y', Object(DateTime)) #4 /home/onlinejournal/public_html/cache/t_compile/40b479e4453fcca5448758e7ff75bbfadceaf417^464ad654e8400129592b9e5480ab9b59f2865d7a_0.plugins-122-plugins-generic-pdfJsViewer-generic-pdfJsViewer.submissionGalley.tpl.php(39): smarty_modifier_date_format('2021-04-23', '%B %e, %Y') #5 /home/onlinejournal/public_html/lib/pkp/lib in /home/onlinejournal/public_html/lib/pkp/lib/vendor/php81_bc/strftime/src/php-8.1-strftime.php on line 61