I don't know if this is connected with an approval issue, but every time I'm trying to post a new message in private topic I see "Oops, something went wrong" window. When I reload a page I see that the post is there though. I've tried to post as a user and as admin as well, the error is still pops out. Here's my flarum info.
Flarum core 0.1.0-beta.14.1
PHP version: 7.2.18
Loaded extensions: Core, bcmath, calendar, ctype, date, filter, hash, iconv, json, SPL, pcre, readline, Reflection, session, standard, mysqlnd, tokenizer, zip, zlib, libxml, dom, PDO, bz2, SimpleXML, xml, wddx, xmlreader, xmlwriter, openssl, curl, fileinfo, gd, gettext, gmp, intl, imap, ldap, mbstring, exif, mysqli, Phar, pdo_mysql, pdo_sqlite, soap, sockets, xmlrpc, xsl
+----------------------+------------------+--------+
| Flarum Extensions | | |
+----------------------+------------------+--------+
| ID | Version | Commit |
+----------------------+------------------+--------+
| flarum-approval | v0.1.0-beta.14 | |
| flarum-bbcode | v0.1.0-beta.12 | |
| flarum-emoji | v0.1.0-beta.14 | |
| flarum-lang-english | v0.1.0-beta.14.1 | |
| flarum-flags | v0.1.0-beta.14.1 | |
| flarum-lock | v0.1.0-beta.14 | |
| flarum-markdown | v0.1.0-beta.14 | |
| flarum-mentions | v0.1.0-beta.14 | |
| flarum-statistics | v0.1.0-beta.14 | |
| flarum-sticky | v0.1.0-beta.14 | |
| flarum-subscriptions | v0.1.0-beta.14 | |
| flarum-suspend | v0.1.0-beta.14 | |
| flarum-tags | v0.1.0-beta.14 | |
| flarum-likes | v0.1.0-beta.14 | |
| fof-bbcode-details | 0.1.0 | |
| fof-pages | 0.5.0 | |
| fof-links | 0.4.1 | |
| fof-byobu | dev-master | |
+----------------------+------------------+--------+