Looks like the database columns don't get created (using NeonChat beta.15 version):
[2021-01-20 13:13:33] flarum.ERROR: PDOException: SQLSTATE[42S22]: Column not found: 1054 Unknown column 'neonchat_chat_user.role' in 'field list' in [...]
PHP Flarum info:
Flarum core 0.1.0-beta.15
PHP version: 7.2.24-0ubuntu0.18.04.7
Loaded extensions: Core, date, libxml, openssl, pcre, zlib, filter, hash, pcntl, Reflection, SPL, sodium, session, standard, mysqlnd, PDO, xml, calendar, ctype, curl, dom, mbstring, fileinfo, ftp, gd, gettext, iconv, json, exif, mysqli, pdo_mysql, Phar, posix, readline, shmop, SimpleXML, sockets, sysvmsg, sysvsem, sysvshm, tokenizer, wddx, xmlreader, xmlwriter, xsl, zip, Zend OPcache
+-------------------------------------+------------------+------------------------------------------+
| Flarum Extensions | | |
+-------------------------------------+------------------+------------------------------------------+
| ID | Version | Commit |
+-------------------------------------+------------------+------------------------------------------+
| flarum-approval | v0.1.0-beta.15 | |
| flarum-bbcode | v0.1.0-beta.15 | |
| flarum-emoji | v0.1.0-beta.15 | |
| flarum-lang-english | v0.1.0-beta.15 | |
| flarum-flags | v0.1.0-beta.15 | |
| flarum-likes | v0.1.0-beta.15 | |
| flarum-lock | v0.1.0-beta.15 | |
| flarum-markdown | v0.1.0-beta.15 | |
| flarum-mentions | v0.1.0-beta.15 | |
| flarum-statistics | v0.1.0-beta.15 | |
| flarum-sticky | v0.1.0-beta.15 | |
| flarum-subscriptions | v0.1.0-beta.15 | |
| flarum-suspend | v0.1.0-beta.15 | |
| fof-sitemap | 0.6.0 | |
| fof-default-user-preferences | 0.3.1 | |
| migratetoflarum-canonical | 0.2.3 | |
| customworld-lang-slovak | v1.5.2 | |
| fof-best-answer | 0.3.3 | |
| fof-byobu | 0.6.1 | |
| flarum-tags | v0.1.0-beta.15 | |
| askvortsov-discussion-templates | v0.3.0 | |
| fof-drafts | 0.3.1 | |
| fof-gamification | 0.4.2 | |
| fof-polls | 0.3.2 | 6c130b8067a86d856e2cc8e24ab258f8d2d0e399 |
| fof-prevent-necrobumping | 0.4.0 | |
| fof-reactions | 0.5.0 | |
| clarkwinkelmann-create-user-modal | 1.2.0 | |
| clarkwinkelmann-first-post-approval | 0.1.3 | |
| fof-ban-ips | 0.4.0 | |
| fof-default-group | 0.3.1 | |
| fof-doorman | 0.3.0 | |
| fof-filter | 0.3.1 | |
| fof-merge-discussions | 0.5.1 | |
| fof-spamblock | 0.4.0 | |
| fof-split | 0.6.0 | |
| fof-stopforumspam | 0.4.0 | |
| flarum-embed | v0.1.0-beta.15 | |
| fof-analytics | 0.11.0 | |
| fof-forum-statistics-widget | 0.4.0 | |
| fof-links | 0.5.2 | |
| fof-nightmode | 0.7.1 | |
| fof-pages | 0.6.0 | |
| fof-profile-image-crop | 0.2.1 | |
| fof-pretty-mail | 0.3.0 | |
| fof-share-social | 0.3.0 | |
| fof-socialprofile | 0.2.2 | |
| fof-transliterator | 0.3.0 | |
| fof-user-bio | 0.4.2 | |
| fof-user-directory | 0.5.0 | |
| askvortsov-moderator-warnings | v0.4.1 | |
| flarum-nicknames | v0.1.0-beta.15 | |
| sycho-profile-cover | v1.2.2 | |
| v17development-seo | 1.5.1 | |
| fof-bbcode-details | 0.2.1 | |
| fof-formatting | 0.3.1 | |
| neercsys-bosanski | v0.38 | |
| neercsys-lang-bosanski | v0.19 | |
| madnest-lang-czech | v0.1.0-beta.14.1 | |
| kakifrucht-de | 0.13.1 | |
| askvortsov-categories | v2.0.0 | |
| kakifrucht-de-extended | 0.1.3 | |
| fof-linguist | 0.5.0 | |
| qiaeru-lang-french | v1.9.1 | |
| realodix-indonesian | 1.14.5 | |
| rikusen0335-lang-japanese-extended | v1.6.0 | |
| menomenta-norwegian | 1.0.1 | |
| persianfla-persian | v0.0.1 | |
| rob006-lang-polish | v0.4.3 | |
| bertaveira-pt-pt | v1.2.0 | |
| darkfoxdeveloper-lang-spanish | v1.0.9 | |
| tolgaaaltas-lang-turkish | 0.15.0.4 | |
| tolgaaaltas-turkish | 0.15.0.4 | |
| luatdolphin-lang-vietnamese | 0.1.0-beta.14 | |
| marketplace-l10n-core-russian | 0.1.0-beta.15-18 | |
| marketplace-l10n-ext-russian | 0.1.14 | |
| littlegolden-lang-japanese | v0.1.67.1 | |
| cryental-l10n-ext-korean | 1.1 | |
| michaelbelgium-discussion-views | v5.0.0 | |
| clarkwinkelmann-emojionearea | 0.3.0 | |
| fof-masquerade | 0.3.6 | |
| nearata-lang-italian | v0.1.0-beta.15.1 | |
| fof-oauth | 0.2.0 | |
| matteocontrini-imgur-upload | v3.5.0 | |
| jslirola-login2seeplus | v0.1.7 | |
| antoinefr-money | v0.11.0 | |
| fof-html-errors | 0.5.0 | |
| fof-username-request | 0.4.1 | |
| fof-webhooks | 0.4.0 | |
| fof-upload | 0.12.2 | |
| ianm-synopsis | 0.1.2 | |
| sycho-advanced-extension-categories | v0.1.0 | |
| tiu-ram0n-brazilian-portuguese | 1.1.23 | |
| v17development-blog | v0.2.1 | |
| therealsujitk-gifs | v2.0.0 | |
| xelson-chat | v1.0.0-beta.1 | |
| flarum-pusher | v0.1.0-beta.15 | |
+-------------------------------------+------------------+------------------------------------------+
Cleared cache and migrated the database, didn't help.
