Steps to reproduce the issue

after login, go to "Read messages" (post installation messages) or .../administrator/index.php?option=com_postinstall&eid=700 - this error is with clean install of joomla or after ugrade to latest version (3.7.4)

there is error:
Fatal error: Class 'XMLReader' not found in .../libraries/joomla/feed/factory.php on line 39

Expected result

correctly displayed adminsitration area with messages - displayed as all other parts of jooml administration,

Actual result

there is only black text on white background with error messasge

System information (as much as possible)

PHP Built On: FreeBSD web253s93.dnsserver.eu 10.2-RELEASE-p7 FreeBSD 10.2-RELEASE-p7 #0: Mon Nov 2 14:19:39 UTC 2015 root@amd64-builder.daemonology.net:/usr/obj/usr/src/sys/GENERIC amd64
Database Version: 5.5.40-36.1
Database Collation: utf8_general_ci
Database Connection Collation utf8mb4_general_ci
PHP Version: 5.6.20
Web Server: Apache
WebServer to PHP Interface: cgi-fcgi
Joomla! Version: Joomla! 3.7.4 Stable [ Amani ] 25-July-2017 11:11 GMT
Joomla! Platform Version: Joomla Platform 13.1.0 Stable [ Curiosity ] 24-Apr-2013 00:00 GMT
User Agent: Mozilla/5.0 (Windows NT 5.1; rv:51.0) Gecko/20100101 Firefox/51.0

Additional comments

same error is also with some other componets, e.g. "FAQueue" - black text on white background instead of correctly displayed dashboard of component in joomla administration...
pls. see attached image