here's the screenshot of the console errors:
Imgur
@askvortsov here's the output of php flarum info
~ php flarum info
Flarum core 0.1.0-beta.16
PHP version: 8.0.5
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, zip, Zend OPcache
+----------------------+------------------+--------+
| Flarum Extensions | | |
+----------------------+------------------+--------+
| ID | Version | Commit |
+----------------------+------------------+--------+
| flarum-flags | v0.1.0-beta.16 | |
| v17development-seo | v1.7.2 | |
| flarum-tags | v0.1.0-beta.16 | |
| flarum-suspend | v0.1.0-beta.16 | |
| flarum-subscriptions | v0.1.0-beta.16 | |
| flarum-sticky | v0.1.0-beta.16 | |
| flarum-statistics | v0.1.0-beta.16 | |
| flarum-mentions | v0.1.0-beta.16 | |
| flarum-markdown | v0.1.0-beta.16.1 | |
| flarum-lock | v0.1.0-beta.16 | |
| flarum-likes | v0.1.0-beta.16 | |
| flarum-lang-english | v0.1.0-beta.16 | |
| flarum-emoji | v0.1.0-beta.16 | |
| flarum-bbcode | v0.1.0-beta.16 | |
| flarum-approval | v0.1.0-beta.16 | |
+----------------------+------------------+--------+