Fatal error: Uncaught Error: Class 'IntlDateFormatter' not found in /var/www/html/lib/pkp/lib/vendor/php81_bc/strftime/src/php-8.1-strftime.php:60 Stack trace: #0 /var/www/html/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 /var/www/html/lib/pkp/lib/vendor/php81_bc/strftime/src/php-8.1-strftime.php(180): preg_replace_callback('/(?<!%)%([_#-]?...', Object(Closure), '%B %e, %Y') #3 /var/www/html/lib/pkp/lib/vendor/smarty/smarty/libs/plugins/modifier.date_format.php(85): PHP81_BC\strftime('%B %e, %Y', Object(DateTime)) #4 /var/www/html/cache/t_compile/27fa2ede329c9612a98aa45097177d02c2b85e0d^fd5f48bcc2ebfea449363d9d8c6b1bf83618391d_0.plugins-16-plugins-generic-pdfJsViewer-generic-pdfJsViewer.submissionGalley.tpl.php(39): smarty_modifier_date_format('2020-09-07', '%B %e, %Y') #5 /var/www/html/lib/pkp/lib/vendor/smarty/smarty/libs/sysplugins/smarty_template_resource_base.php(123): content_6a903c39740cc3_38605913 in /var/www/html/lib/pkp/lib/vendor/php81_bc/strftime/src/php-8.1-strftime.php on line 60