Fatal error: Uncaught Error: Class 'IntlDateFormatter' not found in /var/www/bulletin-chemistry.kaznu.kz/lib/pkp/lib/vendor/php81_bc/strftime/src/php-8.1-strftime.php:61 Stack trace: #0 /var/www/bulletin-chemistry.kaznu.kz/lib/pkp/lib/vendor/php81_bc/strftime/src/php-8.1-strftime.php(202): PHP81_BC\{closure}() #1 [internal function]: PHP81_BC\{closure}() #2 /var/www/bulletin-chemistry.kaznu.kz/lib/pkp/lib/vendor/php81_bc/strftime/src/php-8.1-strftime.php(181): preg_replace_callback() #3 /var/www/bulletin-chemistry.kaznu.kz/lib/pkp/lib/vendor/smarty/smarty/libs/plugins/modifier.date_format.php(85): PHP81_BC\strftime() #4 /var/www/bulletin-chemistry.kaznu.kz/cache/t_compile/3f8780d529f6525b3292cbeb600b55b536f9cd8a^e60dfbe008759521933fa34101e1d5648a9027f7_0.plugins-1-plugins-generic-pdfJsViewer-generic-pdfJsViewer.submissionGalley.tpl.php(39): smarty_modifier_date_format() #5 /var/www/bulletin-chemistry.kaznu.kz/lib/pkp/lib/vendor/smarty/smarty/libs/sysplugins/smarty_template_resource_base.php(123): content_67ed081e14fa56_35 in /var/www/bulletin-chemistry.kaznu.kz/lib/pkp/lib/vendor/php81_bc/strftime/src/php-8.1-strftime.php on line 61