Fixed PHP 8 compatibility: [E_WARNING] Attempt to read property "height" on null

4

420

Active member
Affected version
2.2.10 Patch 1
Happens on both PHP 8.0 and 8.1.

After upgrading from PHP 7.4 to PHP 8.1, a bunch of errors started popping up in the Server Error Log. Downgrading to 8.0 and rebuilding master data didn't help. Disabling all addons didn't help.

We have over 1,854,562 images in our Media Galley. Whenever the problematic media gallery item is viewed, it triggers the error without fail. The affected media gallery images are broken. This only started happening after upgrading to PHP 8.

Errors:
I've edited out the URL title and changed the name of /home/user/.

Code: 
ErrorException: Template error: [E_WARNING] Attempt to read property "height" on null src/addons/XFMG/Entity/MediaItem.php:997
Generated by: Unknown account Aug 26, 2022 at 11:22 AM
Stack trace
#0 src/addons/XFMG/Entity/MediaItem.php(997): XF\Template\Templater->handleTemplateError(2, '[E_WARNING] Att...', '/home/420/do...', 997)
#1 src/XF/Mvc/Entity/Entity.php(162): XFMG\Entity\MediaItem->getStructuredData()
#2 src/XF/Mvc/Entity/Entity.php(120): XF\Mvc\Entity\Entity->get('structured_data')
#3 internal_data/code_cache/templates/l1/s3/public/xfmg_media_view.php(43): XF\Mvc\Entity\Entity->offsetGet('structured_data')
#4 src/XF/Template/Templater.php(1651): XF\Template\Templater->{closure}(Object(XF\Template\Templater), Array, NULL)
#5 src/XF/Template/Template.php(24): XF\Template\Templater->renderTemplate('xfmg_media_view', Array)
#6 src/XF/Mvc/Renderer/Html.php(50): XF\Template\Template->render()
#7 src/XF/Mvc/Dispatcher.php(460): XF\Mvc\Renderer\Html->renderView('XFMG:Media\\View', 'public:xfmg_med...', Array)
#8 src/XF/Mvc/Dispatcher.php(442): XF\Mvc\Dispatcher->renderView(Object(XF\Mvc\Renderer\Html), Object(XF\Mvc\Reply\View))
#9 src/XF/Mvc/Dispatcher.php(402): XF\Mvc\Dispatcher->renderReply(Object(XF\Mvc\Renderer\Html), Object(XF\Mvc\Reply\View))
#10 src/XF/Mvc/Dispatcher.php(60): XF\Mvc\Dispatcher->render(Object(XF\Mvc\Reply\View), 'html')
#11 src/XF/App.php(2353): XF\Mvc\Dispatcher->run()
#12 src/XF.php(524): XF\App->run()
#13 index.php(20): XF::runApp('XF\\Pub\\App')
#14 {main}
Request state
array(4) {
  ["url"] => string(39) "/community/gallery/1452046/"
  ["referrer"] => bool(false)
  ["_GET"] => array(0) {
  }
  ["_POST"] => array(0) {
  }
}

Code: 
ErrorException: Template error: [E_WARNING] Attempt to read property "Data" on null src/addons/XFMG/Entity/MediaItem.php:997
Generated by: Unknown account Aug 26, 2022 at 11:22 AM
Stack trace
#0 src/addons/XFMG/Entity/MediaItem.php(997): XF\Template\Templater->handleTemplateError(2, '[E_WARNING] Att...', '/home/420/do...', 997)
#1 src/XF/Mvc/Entity/Entity.php(162): XFMG\Entity\MediaItem->getStructuredData()
#2 src/XF/Mvc/Entity/Entity.php(120): XF\Mvc\Entity\Entity->get('structured_data')
#3 internal_data/code_cache/templates/l1/s3/public/xfmg_media_view.php(43): XF\Mvc\Entity\Entity->offsetGet('structured_data')
#4 src/XF/Template/Templater.php(1651): XF\Template\Templater->{closure}(Object(XF\Template\Templater), Array, NULL)
#5 src/XF/Template/Template.php(24): XF\Template\Templater->renderTemplate('xfmg_media_view', Array)
#6 src/XF/Mvc/Renderer/Html.php(50): XF\Template\Template->render()
#7 src/XF/Mvc/Dispatcher.php(460): XF\Mvc\Renderer\Html->renderView('XFMG:Media\\View', 'public:xfmg_med...', Array)
#8 src/XF/Mvc/Dispatcher.php(442): XF\Mvc\Dispatcher->renderView(Object(XF\Mvc\Renderer\Html), Object(XF\Mvc\Reply\View))
#9 src/XF/Mvc/Dispatcher.php(402): XF\Mvc\Dispatcher->renderReply(Object(XF\Mvc\Renderer\Html), Object(XF\Mvc\Reply\View))
#10 src/XF/Mvc/Dispatcher.php(60): XF\Mvc\Dispatcher->render(Object(XF\Mvc\Reply\View), 'html')
#11 src/XF/App.php(2353): XF\Mvc\Dispatcher->run()
#12 src/XF.php(524): XF\App->run()
#13 index.php(20): XF::runApp('XF\\Pub\\App')
#14 {main}
Request state
array(4) {
  ["url"] => string(39) "/community/gallery/41452046/"
  ["referrer"] => bool(false)
  ["_GET"] => array(0) {
  }
  ["_POST"] => array(0) {
  }
}

Code: 
ErrorException: Template error: [E_WARNING] Attempt to read property "width" on null src/addons/XFMG/Entity/MediaItem.php:993
Generated by: Unknown account Aug 26, 2022 at 11:22 AM
Stack trace
#0 src/addons/XFMG/Entity/MediaItem.php(993): XF\Template\Templater->handleTemplateError(2, '[E_WARNING] Att...', '/home/420/do...', 993)
#1 src/XF/Mvc/Entity/Entity.php(162): XFMG\Entity\MediaItem->getStructuredData()
#2 src/XF/Mvc/Entity/Entity.php(120): XF\Mvc\Entity\Entity->get('structured_data')
#3 internal_data/code_cache/templates/l1/s3/public/xfmg_media_view.php(43): XF\Mvc\Entity\Entity->offsetGet('structured_data')
#4 src/XF/Template/Templater.php(1651): XF\Template\Templater->{closure}(Object(XF\Template\Templater), Array, NULL)
#5 src/XF/Template/Template.php(24): XF\Template\Templater->renderTemplate('xfmg_media_view', Array)
#6 src/XF/Mvc/Renderer/Html.php(50): XF\Template\Template->render()
#7 src/XF/Mvc/Dispatcher.php(460): XF\Mvc\Renderer\Html->renderView('XFMG:Media\\View', 'public:xfmg_med...', Array)
#8 src/XF/Mvc/Dispatcher.php(442): XF\Mvc\Dispatcher->renderView(Object(XF\Mvc\Renderer\Html), Object(XF\Mvc\Reply\View))
#9 src/XF/Mvc/Dispatcher.php(402): XF\Mvc\Dispatcher->renderReply(Object(XF\Mvc\Renderer\Html), Object(XF\Mvc\Reply\View))
#10 src/XF/Mvc/Dispatcher.php(60): XF\Mvc\Dispatcher->render(Object(XF\Mvc\Reply\View), 'html')
#11 src/XF/App.php(2353): XF\Mvc\Dispatcher->run()
#12 src/XF.php(524): XF\App->run()
#13 index.php(20): XF::runApp('XF\\Pub\\App')
#14 {main}
Request state
array(4) {
  ["url"] => string(39) "/community/gallery/1452046/"
  ["referrer"] => bool(false)
  ["_GET"] => array(0) {
  }
  ["_POST"] => array(0) {
  }
}

Code: 
ErrorException: Template error: [E_WARNING] Attempt to read property "Data" on null src/addons/XFMG/Entity/MediaItem.php:993
Generated by: Unknown account Aug 26, 2022 at 11:22 AM
Stack trace
#0 src/addons/XFMG/Entity/MediaItem.php(993): XF\Template\Templater->handleTemplateError(2, '[E_WARNING] Att...', '/home/420/do...', 993)
#1 src/XF/Mvc/Entity/Entity.php(162): XFMG\Entity\MediaItem->getStructuredData()
#2 src/XF/Mvc/Entity/Entity.php(120): XF\Mvc\Entity\Entity->get('structured_data')
#3 internal_data/code_cache/templates/l1/s3/public/xfmg_media_view.php(43): XF\Mvc\Entity\Entity->offsetGet('structured_data')
#4 src/XF/Template/Templater.php(1651): XF\Template\Templater->{closure}(Object(XF\Template\Templater), Array, NULL)
#5 src/XF/Template/Template.php(24): XF\Template\Templater->renderTemplate('xfmg_media_view', Array)
#6 src/XF/Mvc/Renderer/Html.php(50): XF\Template\Template->render()
#7 src/XF/Mvc/Dispatcher.php(460): XF\Mvc\Renderer\Html->renderView('XFMG:Media\\View', 'public:xfmg_med...', Array)
#8 src/XF/Mvc/Dispatcher.php(442): XF\Mvc\Dispatcher->renderView(Object(XF\Mvc\Renderer\Html), Object(XF\Mvc\Reply\View))
#9 src/XF/Mvc/Dispatcher.php(402): XF\Mvc\Dispatcher->renderReply(Object(XF\Mvc\Renderer\Html), Object(XF\Mvc\Reply\View))
#10 src/XF/Mvc/Dispatcher.php(60): XF\Mvc\Dispatcher->render(Object(XF\Mvc\Reply\View), 'html')
#11 src/XF/App.php(2353): XF\Mvc\Dispatcher->run()
#12 src/XF.php(524): XF\App->run()
#13 index.php(20): XF::runApp('XF\\Pub\\App')
#14 {main}
Request state
array(4) {
  ["url"] => string(39) "/community/gallery/1452046/"
  ["referrer"] => bool(false)
  ["_GET"] => array(0) {
  }
  ["_POST"] => array(0) {
  }
}

Code: 
ErrorException: Template error: [E_WARNING] Attempt to read property "extension" on null src/addons/XFMG/Entity/MediaItem.php:990
Generated by: Unknown account Aug 26, 2022 at 11:22 AM
Stack trace
#0 src/addons/XFMG/Entity/MediaItem.php(990): XF\Template\Templater->handleTemplateError(2, '[E_WARNING] Att...', '/home/420/do...', 990)
#1 src/XF/Mvc/Entity/Entity.php(162): XFMG\Entity\MediaItem->getStructuredData()
#2 src/XF/Mvc/Entity/Entity.php(120): XF\Mvc\Entity\Entity->get('structured_data')
#3 internal_data/code_cache/templates/l1/s3/public/xfmg_media_view.php(43): XF\Mvc\Entity\Entity->offsetGet('structured_data')
#4 src/XF/Template/Templater.php(1651): XF\Template\Templater->{closure}(Object(XF\Template\Templater), Array, NULL)
#5 src/XF/Template/Template.php(24): XF\Template\Templater->renderTemplate('xfmg_media_view', Array)
#6 src/XF/Mvc/Renderer/Html.php(50): XF\Template\Template->render()
#7 src/XF/Mvc/Dispatcher.php(460): XF\Mvc\Renderer\Html->renderView('XFMG:Media\\View', 'public:xfmg_med...', Array)
#8 src/XF/Mvc/Dispatcher.php(442): XF\Mvc\Dispatcher->renderView(Object(XF\Mvc\Renderer\Html), Object(XF\Mvc\Reply\View))
#9 src/XF/Mvc/Dispatcher.php(402): XF\Mvc\Dispatcher->renderReply(Object(XF\Mvc\Renderer\Html), Object(XF\Mvc\Reply\View))
#10 src/XF/Mvc/Dispatcher.php(60): XF\Mvc\Dispatcher->render(Object(XF\Mvc\Reply\View), 'html')
#11 src/XF/App.php(2353): XF\Mvc\Dispatcher->run()
#12 src/XF.php(524): XF\App->run()
#13 index.php(20): XF::runApp('XF\\Pub\\App')
#14 {main}
Request state
array(4) {
  ["url"] => string(39) "/community/gallery/1452046/"
  ["referrer"] => bool(false)
  ["_GET"] => array(0) {
  }
  ["_POST"] => array(0) {
  }
}

More reports similar to this issue:
xenforo.com

XF 2.2 - XFMG Attempt to read property "height" on null

Found in my error log. XF and XFMG latest versions, PHP 8, Mariadb 10.5. Several occasions, sometimes with height, Data, width, extension, but always XFMG and always the same media. Viewing the media via the direct URL results in a broken picture. The pic was uploaded 2018 with XFMG 1.x As a...
xenforo.com xenforo.com

Similar error report unrelated to XFMG:
xenforo.com

Fixed - php 8 compatibility: [E_WARNING] Attempt to read property "prefix_id" on null

On updating from php 7.4 to php 8, I immediately started getting these errors; ErrorException: Template error: [E_WARNING] Attempt to read property "prefix_id" on null src/XF/Template/Templater.php:3465 Generated by: Unknown account Aug 28, 2021 at 7:22 AM Stack trace #0...
xenforo.com xenforo.com
 
Thank you for reporting this issue, it has now been resolved. We are aiming to include any changes that have been made in a future XFMG release (2.2.5).

Change log:
Avoid error logs if there is a non-existent attachment for a media item.
Click to expand...
There may be a delay before changes are rolled out to the XenForo Community.
 


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