Blank login page after installation

Hi,

After installing OJS, I cant acess the login page. I have reinstalled it three times (after downloading it twice, to make sure if I got a corrupted file). Any ideas?

My PHP error log:

[02-Jan-2019 00:55:53 America/Sao_Paulo] PHP Fatal error:  Uncaught Error: Class 'HTMLPurifier_Strategy_RemoveForeignElements' not found in /home/neojuris/www/periodicos/lib/pkp/lib/vendor/ezyang/htmlpurifier/library/HTMLPurifier/Strategy/Core.php:10
Stack trace:
#0 /home/neojuris/www/periodicos/lib/pkp/lib/vendor/ezyang/htmlpurifier/library/HTMLPurifier.php(117): HTMLPurifier_Strategy_Core->__construct()
#1 /home/neojuris/www/periodicos/lib/pkp/classes/core/PKPString.inc.php(485): HTMLPurifier->__construct(Object(HTMLPurifier_Config))
#2 /home/neojuris/www/periodicos/cache/t_compile/5a71aee81a1957c0f83ad98734054540f514140e^%%C0^C0D^C0D9AC5C%%userLogin.tpl.php(37): PKPString::stripUnsafeHtml(NULL)
#3 /home/neojuris/www/periodicos/lib/pkp/lib/vendor/smarty/smarty/libs/Smarty.class.php(1257): include('/home/neojuris/...')
#4 /home/neojuris/www/periodicos/lib/pkp/classes/template/PKPTemplateManager.inc.php(797): Smarty->fetch('frontend/pages/...', NULL, '5a71aee81a1957c...', true)
#5 /home/neojuris/www/periodicos/lib/pkp/lib/vendor/smarty/smarty/libs/Smarty.class.php(11 in /home/neojuris/www/periodicos/lib/pkp/lib/vendor/ezyang/htmlpurifier/library/HTMLPurifier/Strategy/Core.php on line 10
[02-Jan-2019 00:55:54 America/Sao_Paulo] PHP Warning:  Declaration of PKPUsageEventPlugin::getEnabled() should be compatible with LazyLoadPlugin::getEnabled($contextId = NULL) in /home/neojuris/www/periodicos/lib/pkp/plugins/generic/usageEvent/PKPUsageEventPlugin.inc.php on line 24

Hi @Samory_Santos

I would say that not all dependencies are resolved…
Are you installing from OJS master branch or performing a usual installation through downloading latest stable release from here: https://pkp.sfu.ca/ojs/ojs_download/