Error 500 when trying to display revisions of a post that contains an mention to a post (reply)

[n-peugnet]

When editing a posts that contains a mention to a post (using the "Reply" button, not a mention to a user), it is then impossible to view the revision history.

The API fails with a 500 error:

https://forum.club1.fr/api/diff?id=225

HTTP/2 500 Internal Server Error
server: nginx
date: Mon, 23 Jan 2023 11:47:02 GMT
content-type: application/vnd.api+json
X-Firefox-Spdy: h2

{"errors":[{"status":"500","code":"unknown"}]}

And the associated PHP stack trace:

[2023-01-23 11:47:02] flarum.ERROR: TypeError: Argument 2 passed to Flarum\Mentions\ConfigureMentions::addPostId() must be an instance of Flarum\User\User, null given in /var/www/forum.club1.fr/vendor/flarum/mentions/src/ConfigureMentions.php:128
Stack trace:
#0 [internal function]: Flarum\Mentions\ConfigureMentions::addPostId()
#1 /var/www/forum.club1.fr/vendor/s9e/text-formatter/src/Parser/FilterProcessing.php(209): call_user_func_array()
#2 /var/www/forum.club1.fr/vendor/s9e/text-formatter/src/Parser/FilterProcessing.php(130): s9e\TextFormatter\Parser\FilterProcessing::executeFilter()
#3 /var/www/forum.club1.fr/vendor/s9e/text-formatter/src/Parser.php(1441): s9e\TextFormatter\Parser\FilterProcessing::filterTag()
#4 /var/www/forum.club1.fr/vendor/s9e/text-formatter/src/Parser.php(1396): s9e\TextFormatter\Parser->processStartTag()
#5 /var/www/forum.club1.fr/vendor/s9e/text-formatter/src/Parser.php(1297): s9e\TextFormatter\Parser->processCurrentTag()
#6 /var/www/forum.club1.fr/vendor/s9e/text-formatter/src/Parser.php(345): s9e\TextFormatter\Parser->processTags()
#7 /var/www/forum.club1.fr/vendor/flarum/core/src/Formatter/Formatter.php(105): s9e\TextFormatter\Parser->parse()
#8 /var/www/forum.club1.fr/vendor/the-turk/flarum-diff/src/Api/Serializers/DiffSerializer.php(263): Flarum\Formatter\Formatter->parse()
#9 /var/www/forum.club1.fr/vendor/the-turk/flarum-diff/src/Api/Serializers/DiffSerializer.php(133): TheTurk\Diff\Api\Serializers\DiffSerializer->formatter()
#10 /var/www/forum.club1.fr/vendor/flarum/core/src/Api/Serializer/AbstractSerializer.php(88): TheTurk\Diff\Api\Serializers\DiffSerializer->getDefaultAttributes()
#11 /var/www/forum.club1.fr/vendor/sycho/json-api/src/Resource.php(183): Flarum\Api\Serializer\AbstractSerializer->getAttributes()
#12 /var/www/forum.club1.fr/vendor/sycho/json-api/src/Resource.php(81): Tobscure\JsonApi\Resource->getAttributes()
#13 /var/www/forum.club1.fr/vendor/sycho/json-api/src/Collection.php(113): Tobscure\JsonApi\Resource->toArray()
#14 [internal function]: Tobscure\JsonApi\Collection->Tobscure\JsonApi\{closure}()
#15 /var/www/forum.club1.fr/vendor/sycho/json-api/src/Collection.php(114): array_map()
#16 /var/www/forum.club1.fr/vendor/sycho/json-api/src/Document.php(188): Tobscure\JsonApi\Collection->toArray()
#17 /var/www/forum.club1.fr/vendor/sycho/json-api/src/Document.php(232): Tobscure\JsonApi\Document->toArray()
#18 /var/www/forum.club1.fr/vendor/flarum/core/src/Api/JsonApiResponse.php(27): Tobscure\JsonApi\Document->jsonSerialize()
#19 /var/www/forum.club1.fr/vendor/flarum/core/src/Api/Controller/AbstractSerializeController.php(139): Flarum\Api\JsonApiResponse->__construct()
#20 /var/www/forum.club1.fr/vendor/flarum/core/src/Http/RouteHandlerFactory.php(41): Flarum\Api\Controller\AbstractSerializeController->handle()
#21 /var/www/forum.club1.fr/vendor/flarum/core/src/Http/Middleware/ExecuteRoute.php(27): Flarum\Http\RouteHandlerFactory->Flarum\Http\{closure}()
#22 /var/www/forum.club1.fr/vendor/laminas/laminas-stratigility/src/Next.php(49): Flarum\Http\Middleware\ExecuteRoute->process()
#23 /var/www/forum.club1.fr/vendor/flarum/core/src/Api/Middleware/ThrottleApi.php(33): Laminas\Stratigility\Next->handle()
#24 /var/www/forum.club1.fr/vendor/laminas/laminas-stratigility/src/Next.php(49): Flarum\Api\Middleware\ThrottleApi->process()
#25 /var/www/forum.club1.fr/vendor/flarum/core/src/Http/Middleware/CheckCsrfToken.php(36): Laminas\Stratigility\Next->handle()
#26 /var/www/forum.club1.fr/vendor/laminas/laminas-stratigility/src/Next.php(49): Flarum\Http\Middleware\CheckCsrfToken->process()
#27 /var/www/forum.club1.fr/vendor/flarum/core/src/Http/Middleware/ResolveRoute.php(69): Laminas\Stratigility\Next->handle()
#28 /var/www/forum.club1.fr/vendor/laminas/laminas-stratigility/src/Next.php(49): Flarum\Http\Middleware\ResolveRoute->process()
#29 /var/www/forum.club1.fr/vendor/flarum/core/src/Http/Middleware/SetLocale.php(51): Laminas\Stratigility\Next->handle()
#30 /var/www/forum.club1.fr/vendor/laminas/laminas-stratigility/src/Next.php(49): Flarum\Http\Middleware\SetLocale->process()
#31 /var/www/forum.club1.fr/vendor/flarum/core/src/Http/Middleware/AuthenticateWithHeader.php(58): Laminas\Stratigility\Next->handle()
#32 /var/www/forum.club1.fr/vendor/laminas/laminas-stratigility/src/Next.php(49): Flarum\Http\Middleware\AuthenticateWithHeader->process()
#33 /var/www/forum.club1.fr/vendor/flarum/core/src/Http/Middleware/AuthenticateWithSession.php(31): Laminas\Stratigility\Next->handle()
#34 /var/www/forum.club1.fr/vendor/laminas/laminas-stratigility/src/Next.php(49): Flarum\Http\Middleware\AuthenticateWithSession->process()
#35 /var/www/forum.club1.fr/vendor/flarum/core/src/Http/Middleware/RememberFromCookie.php(52): Laminas\Stratigility\Next->handle()
#36 /var/www/forum.club1.fr/vendor/laminas/laminas-stratigility/src/Next.php(49): Flarum\Http\Middleware\RememberFromCookie->process()
#37 /var/www/forum.club1.fr/vendor/flarum/core/src/Http/Middleware/StartSession.php(61): Laminas\Stratigility\Next->handle()
#38 /var/www/forum.club1.fr/vendor/laminas/laminas-stratigility/src/Next.php(49): Flarum\Http\Middleware\StartSession->process()
#39 /var/www/forum.club1.fr/vendor/flarum/core/src/Api/Middleware/FakeHttpMethods.php(29): Laminas\Stratigility\Next->handle()
#40 /var/www/forum.club1.fr/vendor/laminas/laminas-stratigility/src/Next.php(49): Flarum\Api\Middleware\FakeHttpMethods->process()
#41 /var/www/forum.club1.fr/vendor/flarum/core/src/Http/Middleware/ParseJsonBody.php(28): Laminas\Stratigility\Next->handle()
#42 /var/www/forum.club1.fr/vendor/laminas/laminas-stratigility/src/Next.php(49): Flarum\Http\Middleware\ParseJsonBody->process()
#43 /var/www/forum.club1.fr/vendor/flarum/core/src/Http/Middleware/HandleErrors.php(57): Laminas\Stratigility\Next->handle()
#44 /var/www/forum.club1.fr/vendor/laminas/laminas-stratigility/src/Next.php(49): Flarum\Http\Middleware\HandleErrors->process()
#45 /var/www/forum.club1.fr/vendor/flarum/core/src/Http/Middleware/InjectActorReference.php(25): Laminas\Stratigility\Next->handle()
#46 /var/www/forum.club1.fr/vendor/laminas/laminas-stratigility/src/Next.php(49): Flarum\Http\Middleware\InjectActorReference->process()
#47 /var/www/forum.club1.fr/vendor/laminas/laminas-stratigility/src/MiddlewarePipe.php(75): Laminas\Stratigility\Next->handle()
#48 /var/www/forum.club1.fr/vendor/middlewares/request-handler/src/RequestHandler.php(84): Laminas\Stratigility\MiddlewarePipe->process()
#49 /var/www/forum.club1.fr/vendor/laminas/laminas-stratigility/src/Next.php(49): Middlewares\RequestHandler->process()
#50 /var/www/forum.club1.fr/vendor/middlewares/base-path-router/src/BasePathRouter.php(101): Laminas\Stratigility\Next->handle()
#51 /var/www/forum.club1.fr/vendor/laminas/laminas-stratigility/src/Next.php(49): Middlewares\BasePathRouter->process()
#52 /var/www/forum.club1.fr/vendor/laminas/laminas-stratigility/src/Middleware/OriginalMessages.php(36): Laminas\Stratigility\Next->handle()
#53 /var/www/forum.club1.fr/vendor/laminas/laminas-stratigility/src/Next.php(49): Laminas\Stratigility\Middleware\OriginalMessages->process()
#54 /var/www/forum.club1.fr/vendor/middlewares/base-path/src/BasePath.php(73): Laminas\Stratigility\Next->handle()
#55 /var/www/forum.club1.fr/vendor/laminas/laminas-stratigility/src/Next.php(49): Middlewares\BasePath->process()
#56 /var/www/forum.club1.fr/vendor/flarum/core/src/Http/Middleware/ProcessIp.php(24): Laminas\Stratigility\Next->handle()
#57 /var/www/forum.club1.fr/vendor/laminas/laminas-stratigility/src/Next.php(49): Flarum\Http\Middleware\ProcessIp->process()
#58 /var/www/forum.club1.fr/vendor/laminas/laminas-stratigility/src/MiddlewarePipe.php(75): Laminas\Stratigility\Next->handle()
#59 /var/www/forum.club1.fr/vendor/laminas/laminas-stratigility/src/MiddlewarePipe.php(64): Laminas\Stratigility\MiddlewarePipe->process()
#60 /var/www/forum.club1.fr/vendor/laminas/laminas-httphandlerrunner/src/RequestHandlerRunner.php(96): Laminas\Stratigility\MiddlewarePipe->handle()
#61 /var/www/forum.club1.fr/vendor/flarum/core/src/Http/Server.php(45): Laminas\HttpHandlerRunner\RequestHandlerRunner->run()
#62 /var/www/forum.club1.fr/public/index.php(26): Flarum\Http\Server->listen()
#63 {main}--

Here is an example post, which after editing produces the issue:

@"vincent"#9 encore un test

And flarum info:

Flarum core 1.6.3
PHP version: 7.4.3
MySQL version: 5.5.5-10.5.18-MariaDB-1:10.5.18+maria~ubu2004
Loaded extensions: Core, date, libxml, openssl, pcre, zlib, filter, hash, pcntl, Reflection, SPL, session, standard, sodium, mysqlnd, PDO, xml, bz2, calendar, ctype, curl, dom, mbstring, FFI, fileinfo, ftp, gd, gettext, iconv, igbinary, intl, json, ldap, exif, memcache, msgpack, mysqli, pdo_mysql, pdo_pgsql, pdo_sqlite, pgsql, Phar, posix, readline, shmop, SimpleXML, sockets, sqlite3, sysvmsg, sysvsem, sysvshm, tokenizer, xmlreader, xmlwriter, xsl, zip, memcached, Zend OPcache
+-------------------------------+------------------+--------+
| Flarum Extensions             |                  |        |
+-------------------------------+------------------+--------+
| ID                            | Version          | Commit |
+-------------------------------+------------------+--------+
| flarum-tags                   | v1.6.1           |        |
| flarum-suspend                | v1.6.1           |        |
| flarum-markdown               | v1.6.1           |        |
| zerosonesfun-composer-preview | 1.1.9            |        |
| tituspijean-auth-ldap         | dev-modifs-club1 |        |
| the-turk-diff                 | 1.1.2            |        |
| nearata-remove-pane           | v2.0.1           |        |
| ianm-syndication              | dev-fix-atom-ids |        |
| fof-user-bio                  | 1.1.1            |        |
| fof-links                     | 1.1.2            |        |
| fof-formatting                | 1.0.2            |        |
| fof-default-user-preferences  | 1.2.0            |        |
| flarum-subscriptions          | v1.6.3           |        |
| flarum-sticky                 | v1.6.1           |        |
| flarum-statistics             | v1.6.1           |        |
| flarum-mentions               | v1.6.3           |        |
| flarum-lock                   | v1.6.1           |        |
| flarum-likes                  | v1.6.1           |        |
| flarum-lang-french            | v4.5.0           |        |
| flarum-lang-english           | v1.6.0           |        |
| flarum-flags                  | v1.6.1           |        |
| datlechin-discussion-count    | v0.1.0           |        |
| club-1-cross-references       | v0.4.1           |        |
| askvortsov-checklist          | v1.3.1           |        |
+-------------------------------+------------------+--------+
Base URL: https://forum.club1.fr
Installation path: /var/www/forum.club1.fr
Queue driver: sync
Session driver: file
Mail driver: smtp
Debug mode: off

[7UMENGL1aNG]

Edited posts: Normal

Edited post-reply: Normal

Edited reply-reply-1: Error

Edited reply-reply-2: Error

---

Logs:

flarum.ERROR: TypeError: Flarum\Mentions\ConfigureMentions::addPostId(): Argument #2 ($actor) must be of type Flarum\User\User, null given in /www/wwwroot/forum.monika.love/vendor/flarum/mentions/src/ConfigureMentions.php:128

Info:

+----------------------------------------+---------+--------+
| Flarum Extensions                      |         |        |
+----------------------------------------+---------+--------+
| ID                                     | Version | Commit |
+----------------------------------------+---------+--------+
| flarum-flags                           | v1.6.1  |        |
| flarum-likes                           | v1.6.1  |        |
| flarum-tags                            | v1.6.1  |        |
| flarum-sticky                          | v1.6.1  |        |
| flarum-suspend                         | v1.6.1  |        |
| flarum-nicknames                       | v1.6.1  |        |
| flarum-lock                            | v1.6.1  |        |
| flarum-approval                        | v1.6.1  |        |
| afrux-forum-widgets-core               | v0.1.7  |        |
| flarum-mentions                        | v1.6.3  |        |
| antoinefr-money                        | v1.2.0  |        |
| flarum-markdown                        | v1.6.1  |        |
| zerosonesfun-direct-links              | 3.1     |        |
| zequeen-acgembed-remastered            | v1.1.2  |        |
| v17development-user-badges             | v1.1.0  |        |
| the-turk-stickiest                     | 3.0.1   |        |
| the-turk-diff                          | 1.1.2   |        |
| sycho-profile-cover                    | v1.3.3  |        |
| pipecraft-id-slug                      | v1.1.0  |        |
| nearata-embed-video                    | v3.2.1  |        |
| malago-ads                             | 0.3.2   |        |
| kilowhat-audit-free                    | 1.6.0   |        |
| justoverclock-staff-members-widget     | 0.1.3   |        |
| justoverclock-guestengagement          | 1.0.3   |        |
| justoverclock-auto-post-count-badge    | 0.1.9   |        |
| jslirola-login2seeplus                 | v0.2.1  |        |
| ianm-synopsis                          | 1.2.2   |        |
| ianm-level-ranks                       | 1.1.0   |        |
| fof-username-request                   | 1.0.1   |        |
| fof-user-directory                     | 1.2.3   |        |
| fof-user-bio                           | 1.1.1   |        |
| fof-upload                             | 1.2.3   |        |
| fof-terms                              | 1.2.0   |        |
| fof-subscribed                         | 1.1.2   |        |
| fof-split                              | 1.1.0   |        |
| fof-sitemap                            | 2.0.1   |        |
| fof-profile-image-crop                 | 1.1.0   |        |
| fof-polls                              | 1.3.0   |        |
| fof-nightmode                          | 1.5.1   |        |
| fof-merge-discussions                  | 1.3.1   |        |
| fof-links                              | 1.1.2   |        |
| fof-linguist                           | 1.1.0   |        |
| fof-html-errors                        | 1.1.0   |        |
| fof-drafts                             | 1.2.2   |        |
| fof-doorman                            | 1.1.1   |        |
| fof-best-answer                        | 1.2.4   |        |
| flarum-subscriptions                   | v1.6.3  |        |
| flarum-statistics                      | v1.6.1  |        |
| flarum-lang-english                    | v1.6.0  |        |
| flarum-lang-chinese-simplified         | v1.3.0  |        |
| ecnu-im-sticky-sidenav                 | v1.1.0  |        |
| dem13n-topic-starter-label             | 0.1.8   |        |
| darkle-fancybox                        | 1.1.2   |        |
| club-1-cross-references                | v0.4.1  |        |
| clarkwinkelmann-who-read               | 1.4.1   |        |
| clarkwinkelmann-sudo-mode              | 1.0.2   |        |
| clarkwinkelmann-prominent-post-numbers | 1.0.0   |        |
| clarkwinkelmann-money-rewards          | 1.0.0   |        |
| blessing-oauth-client                  | v2.0.2  |        |
| askvortsov-rich-text                   | v2.1.7  |        |
| askvortsov-moderator-warnings          | v0.6.1  |        |
| askvortsov-markdown-tables             | v1.2.1  |        |
| askvortsov-categories                  | v3.0.6  |        |
| afrux-online-users-widget              | v0.1.6  |        |
| afrux-news-widget                      | v0.1.1  |        |
| afrux-forum-stats-widget               | v0.1.1  |        |
+----------------------------------------+---------+--------+
Base URL: https://forum.monika.love
Installation path: /www/wwwroot/forum.monika.love
Queue driver: sync
Session driver: file
Mail driver: smtp
Debug mode: off

I don't have a 500 error, but I think I'm in a similar situation to him.

[n0099]

related: s9e/TextFormatter#214