XF 2.1 "An unexpected error occurred. Please try again later." after upgrade to PHP 7.3

[MatthewC]

Good morning.

My server was running PHP 7.0 and my Xenforo was working fine. I asked my webhost to upgrade my PHP to 7.3. They did, and it was successful. However, now when I visit my forum I get the error message of "An unexpected error occurred. Please try again later."

I honestly can't remember if I was running Xenforo 2.1 or 2.2.

Could someone please tell me how I may go about fixing this and getting my forum back up?

Thank you in advance.

 

[Paul B]

You may be able to log in to the ACP directly to check the error log.

Otherwise, enable debug mode - that should give a detailed error message.

 

[MatthewC]

Thank you for this quick and helpful reply.

Trying to access the ACP directly resulted in the same error.

Entering the debug mode provided the following feedback:


An exception occurred: [ErrorException] [E_WARNING] "continue" targeting switch is equivalent to "break". Did you mean to use "continue 2"? in src/XF/Language.php on line 458

2. XF::handlePhpError() in src/vendor/composer/ClassLoader.php at line 444
4. include() in src/vendor/composer/ClassLoader.php at line 444
6. Composer\Autoload\includeFile() in src/vendor/composer/ClassLoader.php at line 322
8. Composer\Autoload\ClassLoader->loadClass()
10. spl_autoload_call() in src/XF/App.php at line 1010
12. XF\App->XF\{closure}() in src/XF/Container.php at line 228
14. XF\Container->create() in src/XF/App.php at line 2339
16. XF\App->language() in src/XF.php at line 412
18. XF::language() in src/XF/App.php at line 1466
20. XF\App->setupTemplaterObject() in src/XF/App.php at line 1119
22. XF\App->XF\{closure}() in src/XF/Container.php at line 28
24. XF\Container->offsetGet() in src/XF/App.php at line 2692
26. XF\App->templater() in src/XF/Admin/App.php at line 95
28. XF\Admin\App->preRender() in src/XF/Mvc/Dispatcher.php at line 280
30. XF\Mvc\Dispatcher->render() in src/XF/Mvc/Dispatcher.php at line 44
32. XF\Mvc\Dispatcher->run() in src/XF/App.php at line 1931
34. XF\App->run() in src/XF.php at line 329
36. XF::runApp() in admin.php at line 13

 

[Paul B]

Either XF or an add-on is not compatible with the version of PHP you have upgraded to.

Revert back to 7.0.

 

[MatthewC]

Thank you again.

I have no add-ons installed at all.

I will revert back.

Wordpress on my other sites was complaining that 7.0 was not secure. Can I go to version 7.2 instead? What is the newest version of PHP that Xenforo should work with?

 

[Paul B]

It depends what XF version you are running.

If you upgrade to 2.1.10 you can go to PHP 7.4.

 

[MatthewC]

Good to know. I just extended my support and downloaded the latest version and I will update to 2.1.10. Thanks for all of your assitance.

 

[MatthewC]

Upgrading to 2.1.10 solved everything. I was just using too old of a version. Easy fix!