When launching the Live Meta Tag Editor the following error message is displaying at the bottom of the page and the Editor along the Right Hand Side of the Page is not displaying.

[[Template core/front/global/metaTagEditor is throwing an error. This theme may be out of date. Run the support tool in the AdminCP to restore the default theme.]]

This is only happening within Thread Topics and is working correctly across all other pages such as Thread/Topic lists and Forum Lists.

Reverting to Default Theme and Disabling All Plugins/Third Party Customizations as well as clearing the Cache have not resolved the issue.

I have only noticed this since I installed the latest patch in the last day or so. All software and patches are up to date.

Have you applied all the latest patches? (there have been more than one) on your site? I ask as I cannot replicate this on my own instance

46 minutes ago, Marc Stridgen said:

Have you applied all the latest patches? (there have been more than one) on your site? I ask as I cannot replicate this on my own instance

I have indeed.

Would it be helpful if I posted the error logs?

It would if you could, yes

12 minutes ago, Marc Stridgen said:

It would if you could, yes

TypeError: htmlspecialchars(): Argument #1 ($string) must be of type string, array given in /home/nasher/public_html/system/Theme/Theme.php(885) : eval()'d code:8652
Stack trace:
#0 /home/nasher/public_html/system/Theme/Theme.php(885) : eval()'d code(8652): htmlspecialchars(Array, 131, 'UTF-8', false)
#1 /home/nasher/public_html/system/Theme/SandboxedTemplate.php(61): IPS\Theme\class_core_front_global->metaTagEditor()
#2 /home/nasher/public_html/system/Theme/Theme.php(885) : eval()'d code(7417): IPS\Theme\_SandboxedTemplate->__call('metaTagEditor', Array)
#3 /home/nasher/public_html/system/Theme/SandboxedTemplate.php(61): IPS\Theme\class_core_front_global->globalTemplate('BY THE BYE by T...', '\n\n\n\n<div class=...', Array)
#4 /home/nasher/public_html/system/Dispatcher/Dispatcher.php(173): IPS\Theme\_SandboxedTemplate->__call('globalTemplate', Array)
#5 /home/nasher/public_html/system/Dispatcher/Standard.php(113): IPS\_Dispatcher->finish()
#6 /home/nasher/public_html/system/Dispatcher/Front.php(558): IPS\Dispatcher\_Standard->finish()
#7 /home/nasher/public_html/system/Dispatcher/Dispatcher.php(155): IPS\Dispatcher\_Front->finish()
#8 /home/nasher/public_html/index.php(13): IPS\_Dispatcher->run()
#9 {main}

What version of PHP are you using there? And could you please give me a link to that topic?

15 minutes ago, Marc Stridgen said:

What version of PHP are you using there? And could you please give me a link to that topic?

8.1

https://demonland.com/forums/topic/55654-by-the-bye-by-the-oracle/
 

the error is only occurring within topics

I have created a ticket on this, so we can take a closer look at the issue

55 minutes ago, Marc Stridgen said:

I have created a ticket on this, so we can take a closer look at the issue

Appreciate that. Thank you.