The issue
I just installed flarum and am getting the following error:
Error thrown with message "Typed property DOMDocument::$documentElement must not be accessed before initialization"
Flarum information
Flarum core 1.3.1
PHP version: 8.1.2
MySQL version: 5.5.5-10.6.7-MariaDB-2ubuntu1
Loaded extensions: Core, date, libxml, openssl, pcre, zlib, filter, hash, json, pcntl, Reflection, SPL, session, standard, sodium, mysqlnd, PDO, xml, calendar, ctype, curl, dom, mbstring, FFI, fileinfo, ftp, gd, gettext, iconv, intl, exif, mysqli, pdo_mysql, Phar, posix, readline, shmop, SimpleXML, sockets, sysvmsg, sysvsem, sysvshm, tokenizer, xmlreader, xmlwriter, xsl, Zend OPcache
+----------------------+---------+--------+
| Flarum Extensions | | |
+----------------------+---------+--------+
| ID | Version | Commit |
+----------------------+---------+--------+
| flarum-approval | v1.3.0 | |
| flarum-bbcode | v1.3.0 | |
| flarum-emoji | v1.3.0 | |
| flarum-lang-english | v1.3.0 | |
| flarum-flags | v1.3.0 | |
| flarum-likes | v1.3.0 | |
| flarum-lock | v1.3.0 | |
| flarum-markdown | v1.3.0 | |
| flarum-mentions | v1.3.1 | |
| flarum-statistics | v1.3.0 | |
| flarum-sticky | v1.3.0 | |
| flarum-subscriptions | v1.3.1 | |
| flarum-suspend | v1.3.1 | |
| flarum-tags | v1.3.0 | |
+----------------------+---------+--------+
Queue driver: sync
Mail driver: mail
Debug mode: ON