The issue
My problem is that main css file is not applied. I have plain page without any styling. The problem is that in html in head section I have styles added like this:
<link rel="stylesheet" href="https://<my_page_adddress>.pl/forum/assets/A.forum.css,qv=3458aa87.pagespeed.cf.cZ4fLdTtlV.css">
And there is 404 when browser tries to load this stylesheet. I cleared the cache both in Flarum admin page, and in my browser. This problem appears at random browsers at random times at random people. Sometimes it appears on one browser, but not on the other. Also some people complains about it while for others it works just fine.
I'm not sure if it is Flarum related problem, maybe it is my hosting provider that for some reason alters this. (op cache maybe?). But before I go to the provider I want to make sure that Flarum does not do it for some reason.
I checked the logs, but last logs are from month ago and are related to the database.
I recently upgraded my forum. After the upgrade this problem disappeared for about a week, and reappeared again yesterday.
Any clues?
Flarum information
Flarum core 1.3.1
PHP version: 7.4.29
MySQL version: 5.5.5-10.1.48-MariaDB
Loaded extensions: Core, date, libxml, openssl, pcre, sqlite3, zlib, bz2, ctype, dom, fileinfo, filter, gd, gmp, hash, iconv, intl, json, mbstring, SPL, session, pcntl, standard, PDO, mysqlnd, pdo_sqlite, Phar, posix, pspell, Reflection, pdo_mysql, shmop, SimpleXML, soap, sockets, mysqli, tokenizer, xml, xmlreader, xmlwriter, zip, bcmath, calendar, curl, dba, exif, ftp, gettext, imagick, imap, ldap, pdo_pgsql, pgsql, sodium, sysvsem, sysvshm, tidy, xmlrpc, xsl, geoip, memcached, mailparse, dbase, igbinary, OAuth, mongodb, redis, sqlsrv, translit, uploadprogress, PDFlib, odbc, gnupg, maxminddb, brotli, oci8, pdo_sqlsrv
+--------------------------------+-------------+--------+
| Flarum Extensions | | |
+--------------------------------+-------------+--------+
| ID | Version | Commit |
+--------------------------------+-------------+--------+
| flarum-suspend | v1.3.1 | |
| flarum-flags | v1.3.0 | |
| flarum-lang-chinese-simplified | v1.1.1.1220 | |
| fof-oauth | 1.2.2 | |
| fof-user-directory | 1.2.3 | |
| fof-subscribed | 1.1.2 | |
| fof-links | 1.1.1 | |
| flarum-approval | v1.3.0 | |
| flarum-emoji | v1.3.0 | |
| flarum-likes | v1.3.0 | |
| flarum-lock | v1.3.0 | |
| flarum-mentions | v1.3.1 | |
| flarum-sticky | v1.3.0 | |
| flarum-tags | v1.3.0 | |
| flarum-pusher | v1.3.0 | |
| flarum-lang-english | v1.3.0 | |
| flarum-bbcode | v1.3.0 | |
| flarum-markdown | v1.3.0 | |
| flarum-statistics | v1.3.0 | |
| flarum-subscriptions | v1.3.1 | |
| fof-split | 1.1.0 | |
| fof-upload | 1.2.3 | |
| rob006-lang-polish | v0.5.27 | |
| fof-reactions | 1.1.0 | |
+--------------------------------+-------------+--------+
Base URL: https://<page_url>.pl/forum
Installation path: (...)/forum
Queue driver: sync
Mail driver: smtp
Debug mode: off