After downgrading (with documentation) from OJS 3.3.0.4 to 3.2.1.4. submission page show error 500

Hi everyone!

URL: emreview.ru
I have one big problem of downgrading from OJS 3.3.0.4. (because, it’s too slow - pages opening in 3…10 sec) to 3.2.1.4 with documentation. All functions working well, but submission page (Войти в систему | Управление образованием: теория и практика) show 500 error.

Error log show next:
Notice : Deprecated call without request object. in /home/users/m/mike-podckolzin/domains/emreview.ru/lib/pkp/classes/template/PKPTemplateManager.inc.php on line 973

Notice : Deprecated call without request object. in /home/users/m/mike-podckolzin/domains/emreview.ru/lib/pkp/classes/template/PKPTemplateManager.inc.php on line 973

Warning : Cannot modify header information - headers already sent by (output started at /home/users/m/mike-podckolzin/domains/emreview.ru/lib/pkp/classes/template/PKPTemplateManager.inc.php:973) in /home/users/m/mike-podckolzin/domains/emreview.ru/lib/pkp/classes/template/PKPTemplateManager.inc.php on line 917

Fatal error : Uncaught → Smarty Compiler: Syntax error in template “app:app:dashboardindex.tpl” on line 52 “.section_policy {display:none;}” - Unexpected “:”, expected one of: “}” ← thrown in /home/users/m/mike-podckolzin/domains/emreview.ru/lib/pkp/lib/vendor/smarty/smarty/libs/sysplugins/smarty_internal_templatecompilerbase.php on line 52

What I can do to fix it? Thanks for the answers!