Adding some more context to help the debug. The same issue happens for us when you access the feed as a logged in user but it works fine when logged out. The PHP error log:
2021/07/01 13:24:13 [error] 35#35: *61 FastCGI sent in stderr: "PHP message: PHP Notice: Undefined property: stdClass::$data in /flarum/app/vendor/ianm/syndication/src/Controller/AbstractFeedController.php on line 200PHP message: PHP Notice: Undefined property: stdClass::$data in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 123PHP message: PHP Warning: Invalid argument supplied for foreach() in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 123PHP message: PHP Notice: Trying to get property 'attributes' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 164PHP message: PHP Notice: Trying to get property 'title' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 164PHP message: PHP Notice: Trying to get property 'attributes' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 164PHP message: PHP Notice: Trying to get property 'description' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 164PHP message: PHP Notice: Trying to get property 'attributes' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 165PHP message: PHP Notice: Trying to get property 'title' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 165PHP message: PHP Notice: Trying to get property 'attributes' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 165PHP message: PHP Notice: Trying to get property 'description' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 165PHP message: PHP Notice: Trying to get property 'attributes' of non-o
2021/07/01 13:24:14 [error] 35#35: *63 FastCGI sent in stderr: "PHP message: PHP Notice: Undefined property: stdClass::$data in /flarum/app/vendor/ianm/syndication/src/Controller/AbstractFeedController.php on line 200PHP message: PHP Notice: Undefined property: stdClass::$data in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 123PHP message: PHP Warning: Invalid argument supplied for foreach() in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 123PHP message: PHP Notice: Trying to get property 'attributes' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 164PHP message: PHP Notice: Trying to get property 'title' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 164PHP message: PHP Notice: Trying to get property 'attributes' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 164PHP message: PHP Notice: Trying to get property 'description' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 164PHP message: PHP Notice: Trying to get property 'attributes' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 165PHP message: PHP Notice: Trying to get property 'title' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 165PHP message: PHP Notice: Trying to get property 'attributes' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 165PHP message: PHP Notice: Trying to get property 'description' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 165PHP message: PHP Notice: Trying to get property 'attributes' of non-o
2021/07/01 13:24:14 [error] 35#35: *65 FastCGI sent in stderr: "PHP message: PHP Notice: Undefined property: stdClass::$data in /flarum/app/vendor/ianm/syndication/src/Controller/AbstractFeedController.php on line 200PHP message: PHP Notice: Undefined property: stdClass::$data in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 123PHP message: PHP Warning: Invalid argument supplied for foreach() in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 123PHP message: PHP Notice: Trying to get property 'attributes' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 164PHP message: PHP Notice: Trying to get property 'title' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 164PHP message: PHP Notice: Trying to get property 'attributes' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 164PHP message: PHP Notice: Trying to get property 'description' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 164PHP message: PHP Notice: Trying to get property 'attributes' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 165PHP message: PHP Notice: Trying to get property 'title' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 165PHP message: PHP Notice: Trying to get property 'attributes' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 165PHP message: PHP Notice: Trying to get property 'description' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 165PHP message: PHP Notice: Trying to get property 'attributes' of non-o
2021/07/01 13:24:15 [error] 35#35: *67 FastCGI sent in stderr: "PHP message: PHP Notice: Undefined property: stdClass::$data in /flarum/app/vendor/ianm/syndication/src/Controller/AbstractFeedController.php on line 200PHP message: PHP Notice: Undefined property: stdClass::$data in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 123PHP message: PHP Warning: Invalid argument supplied for foreach() in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 123PHP message: PHP Notice: Trying to get property 'attributes' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 164PHP message: PHP Notice: Trying to get property 'title' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 164PHP message: PHP Notice: Trying to get property 'attributes' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 164PHP message: PHP Notice: Trying to get property 'description' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 164PHP message: PHP Notice: Trying to get property 'attributes' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 165PHP message: PHP Notice: Trying to get property 'title' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 165PHP message: PHP Notice: Trying to get property 'attributes' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 165PHP message: PHP Notice: Trying to get property 'description' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 165PHP message: PHP Notice: Trying to get property 'attributes' of non-o
2021/07/01 13:24:17 [error] 35#35: *59 FastCGI sent in stderr: "PHP message: PHP Notice: Undefined property: stdClass::$data in /flarum/app/vendor/ianm/syndication/src/Controller/AbstractFeedController.php on line 200PHP message: PHP Notice: Undefined property: stdClass::$data in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 123PHP message: PHP Warning: Invalid argument supplied for foreach() in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 123PHP message: PHP Notice: Trying to get property 'attributes' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 164PHP message: PHP Notice: Trying to get property 'title' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 164PHP message: PHP Notice: Trying to get property 'attributes' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 164PHP message: PHP Notice: Trying to get property 'description' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 164PHP message: PHP Notice: Trying to get property 'attributes' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 165PHP message: PHP Notice: Trying to get property 'title' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 165PHP message: PHP Notice: Trying to get property 'attributes' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 165PHP message: PHP Notice: Trying to get property 'description' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 165PHP message: PHP Notice: Trying to get property 'attributes' of non-o
2021/07/01 13:24:20 [error] 35#35: *61 FastCGI sent in stderr: "PHP message: PHP Notice: Undefined property: stdClass::$data in /flarum/app/vendor/ianm/syndication/src/Controller/AbstractFeedController.php on line 200PHP message: PHP Notice: Undefined property: stdClass::$data in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 123PHP message: PHP Warning: Invalid argument supplied for foreach() in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 123PHP message: PHP Notice: Trying to get property 'attributes' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 164PHP message: PHP Notice: Trying to get property 'title' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 164PHP message: PHP Notice: Trying to get property 'attributes' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 164PHP message: PHP Notice: Trying to get property 'description' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 164PHP message: PHP Notice: Trying to get property 'attributes' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 165PHP message: PHP Notice: Trying to get property 'title' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 165PHP message: PHP Notice: Trying to get property 'attributes' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 165PHP message: PHP Notice: Trying to get property 'description' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 165PHP message: PHP Notice: Trying to get property 'attributes' of non-o
2021/07/01 13:24:26 [error] 35#35: *65 FastCGI sent in stderr: "PHP message: PHP Notice: Undefined property: stdClass::$data in /flarum/app/vendor/ianm/syndication/src/Controller/AbstractFeedController.php on line 200PHP message: PHP Notice: Undefined property: stdClass::$data in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 123PHP message: PHP Warning: Invalid argument supplied for foreach() in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 123PHP message: PHP Notice: Trying to get property 'attributes' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 164PHP message: PHP Notice: Trying to get property 'title' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 164PHP message: PHP Notice: Trying to get property 'attributes' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 164PHP message: PHP Notice: Trying to get property 'description' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 164PHP message: PHP Notice: Trying to get property 'attributes' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 165PHP message: PHP Notice: Trying to get property 'title' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 165PHP message: PHP Notice: Trying to get property 'attributes' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 165PHP message: PHP Notice: Trying to get property 'description' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 165PHP message: PHP Notice: Trying to get property 'attributes' of non-o
2021/07/01 13:24:27 [error] 35#35: *65 FastCGI sent in stderr: "PHP message: PHP Notice: Undefined property: stdClass::$data in /flarum/app/vendor/ianm/syndication/src/Controller/AbstractFeedController.php on line 200PHP message: PHP Notice: Undefined property: stdClass::$data in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 123PHP message: PHP Warning: Invalid argument supplied for foreach() in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 123PHP message: PHP Notice: Trying to get property 'attributes' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 164PHP message: PHP Notice: Trying to get property 'title' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 164PHP message: PHP Notice: Trying to get property 'attributes' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 164PHP message: PHP Notice: Trying to get property 'description' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 164PHP message: PHP Notice: Trying to get property 'attributes' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 165PHP message: PHP Notice: Trying to get property 'title' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 165PHP message: PHP Notice: Trying to get property 'attributes' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 165PHP message: PHP Notice: Trying to get property 'description' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 165PHP message: PHP Notice: Trying to get property 'attributes' of non-o
2021/07/01 13:24:41 [error] 35#35: *77 FastCGI sent in stderr: "PHP message: PHP Notice: Undefined property: stdClass::$data in /flarum/app/vendor/ianm/syndication/src/Controller/AbstractFeedController.php on line 200PHP message: PHP Notice: Undefined property: stdClass::$data in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 123PHP message: PHP Warning: Invalid argument supplied for foreach() in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 123PHP message: PHP Notice: Trying to get property 'attributes' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 164PHP message: PHP Notice: Trying to get property 'title' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 164PHP message: PHP Notice: Trying to get property 'attributes' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 164PHP message: PHP Notice: Trying to get property 'description' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 164PHP message: PHP Notice: Trying to get property 'attributes' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 165PHP message: PHP Notice: Trying to get property 'title' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 165PHP message: PHP Notice: Trying to get property 'attributes' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 165PHP message: PHP Notice: Trying to get property 'description' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 165PHP message: PHP Notice: Trying to get property 'attributes' of non-o
2021/07/01 13:24:42 [error] 35#35: *65 FastCGI sent in stderr: "PHP message: PHP Notice: Undefined property: stdClass::$data in /flarum/app/vendor/ianm/syndication/src/Controller/AbstractFeedController.php on line 200PHP message: PHP Notice: Undefined property: stdClass::$data in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 123PHP message: PHP Warning: Invalid argument supplied for foreach() in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 123PHP message: PHP Notice: Trying to get property 'attributes' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 164PHP message: PHP Notice: Trying to get property 'title' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 164PHP message: PHP Notice: Trying to get property 'attributes' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 164PHP message: PHP Notice: Trying to get property 'description' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 164PHP message: PHP Notice: Trying to get property 'attributes' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 165PHP message: PHP Notice: Trying to get property 'title' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 165PHP message: PHP Notice: Trying to get property 'attributes' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 165PHP message: PHP Notice: Trying to get property 'description' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 165PHP message: PHP Notice: Trying to get property 'attributes' of non-o
2021/07/01 13:24:44 [error] 35#35: *80 FastCGI sent in stderr: "PHP message: PHP Notice: Undefined property: stdClass::$data in /flarum/app/vendor/ianm/syndication/src/Controller/AbstractFeedController.php on line 200PHP message: PHP Notice: Undefined property: stdClass::$data in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 123PHP message: PHP Warning: Invalid argument supplied for foreach() in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 123PHP message: PHP Notice: Trying to get property 'attributes' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 164PHP message: PHP Notice: Trying to get property 'title' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 164PHP message: PHP Notice: Trying to get property 'attributes' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 164PHP message: PHP Notice: Trying to get property 'description' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 164PHP message: PHP Notice: Trying to get property 'attributes' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 165PHP message: PHP Notice: Trying to get property 'title' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 165PHP message: PHP Notice: Trying to get property 'attributes' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 165PHP message: PHP Notice: Trying to get property 'description' of non-object in /flarum/app/vendor/ianm/syndication/src/Controller/DiscussionsActivityFeedController.php on line 165PHP message: PHP Notice: Trying to get property 'attributes' of non-o
2
Just repeats, no other errors in the logs. I had a look at the PR above but don't know the significance of withParentRequest to be able to see that it'd fix this.
Edit:
I also noticed some times the both atom and rss feed renders with:
<title><![CDATA[ianm-syndication.forum.feeds.titles.main_title]]></title>
<subtitle><![CDATA[ianm-syndication.forum.feeds.titles.main_subtitle]]></subtitle>
instead of the actual site title/subtitle. Most of the times it renders correctly.
