Hey guys,
We got auto-updated to Icingaweb 2.9 late last week, and it seems to have broken our web pages’ formatting, giving us just plain text. It looks to be a PHP type error, but I can’t work out why because everything seems to be installed, and I don’t know which logs to look at to see what’s going on.
Could I get some pointers to get me started please? It doesn’t seem to be a common error from what my searches have (or have not) pulled up. Nothing untoward shows in the Icinga2 or nginx logs.
Please find below a screen grab of the Icinga web page; this is the list of installed Icinga and PHP related packages if it helps.
Thanks in advance 
rpm -qa | grep -i icinga
icinga-php-thirdparty-0.10.0-1.el7.icinga.noarch
icingaweb2-vendor-dompdf-2.9.0-1.el7.icinga.noarch
icinga2-selinux-2.12.4-1.el7.icinga.x86_64
icinga-l10n-1.1.0-1.el7.icinga.noarch
icinga2-bin-2.12.4-1.el7.icinga.x86_64
icingaweb2-common-2.9.0-1.el7.icinga.noarch
icingaweb2-vendor-Parsedown-2.9.0-1.el7.icinga.noarch
icingaweb2-2.9.0-1.el7.icinga.noarch
icinga2-common-2.12.4-1.el7.icinga.x86_64
icinga-php-library-0.6.0-1.el7.icinga.noarch
icingaweb2-vendor-lessphp-2.9.0-1.el7.icinga.noarch
icingaweb2-vendor-HTMLPurifier-2.9.0-1.el7.icinga.noarch
icinga2-2.12.4-1.el7.icinga.x86_64
icingacli-2.9.0-1.el7.icinga.noarch
icinga2-ido-mysql-2.12.4-1.el7.icinga.x86_64
icingaweb2-vendor-zf1-2.9.0-1.el7.icinga.noarch
php-Icinga-2.9.0-1.el7.icinga.noarch
icinga-php-common-1.0.0-1.el7.icinga.noarch
icingaweb2-vendor-JShrink-2.9.0-1.el7.icinga.noarch
icingaweb2-selinux-2.9.0-1.el7.icinga.noarch
rh-php73-php-mysqlnd-7.3.20-1.el7.x86_64
php-pear-1.9.4-22.el7.noarch
icinga-php-thirdparty-0.10.0-1.el7.icinga.noarch
rh-php73-php-common-7.3.20-1.el7.x86_64
php-xml-5.4.16-48.el7.x86_64
rh-php73-php-soap-7.3.20-1.el7.x86_64
rh-php73-php-gd-7.3.20-1.el7.x86_64
rh-php73-php-zip-7.3.20-1.el7.x86_64
rh-php73-php-fpm-7.3.20-1.el7.x86_64
php-process-5.4.16-48.el7.x86_64
rh-php73-php-process-7.3.20-1.el7.x86_64
rh-php73-php-pgsql-7.3.20-1.el7.x86_64
rh-php73-runtime-1-1.el7.x86_64
php-cli-5.4.16-48.el7.x86_64
rh-php73-php-ldap-7.3.20-1.el7.x86_64
icinga-php-library-0.6.0-1.el7.icinga.noarch
icingaweb2-vendor-lessphp-2.9.0-1.el7.icinga.noarch
rh-php73-php-xml-7.3.20-1.el7.x86_64
rh-php73-php-mbstring-7.3.20-1.el7.x86_64
rh-php73-php-json-7.3.20-1.el7.x86_64
php-common-5.4.16-48.el7.x86_64
rh-php73-php-cli-7.3.20-1.el7.x86_64
rh-php73-php-intl-7.3.20-1.el7.x86_64
php-Icinga-2.9.0-1.el7.icinga.noarch
rh-php73-php-pdo-7.3.20-1.el7.x86_64
php-pecl-yaml-1.1.1-5.el7.x86_64
icinga-php-common-1.0.0-1.el7.icinga.noarch
