Fatal error when the page is loading

[Atten007]

Hello,

Today I read about WordPress playground and I wanted to test it. Unfortunately, it's crashing on my MacBook Air M1 in the persistent mode and that's not good. But it works in the temporary mode. The following bug occurs when trying to load:

Fatal error:
Uncaught Error:
  Call to undefined function wp_check_php_mysql_versions() in /wordpress/wp-settings.php:2

Stack trace:
   #0 /wordpress/wp-config.php(11): require_once()
   #1 /wordpress/wp-load.php(2): require_once('/wordpress/wp-c...')
   #2 /wordpress/wp-blog-header.php(2): require_once('/wordpress/wp-l...')
   #3 /wordpress/index.php(2): require('/wordpress/wp-b...')
   #4 {main} thrown in /wordpress/wp-settings.php on line 2

If this could be fixed very soon, I'll be very happy! This is the page where WordPress crashes.

I'm currently using the WordPress playground with the latest WordPress version (at this time of writing this is 6.2) and latest PHP (8.2).

Greetings,
Atten 😄

[dmsnell]

Looks like a good report; thanks @Atten007

Could be an issue with Safari as it breaks there for me but runs in Firefox and Chrome. Are you running it in Safari too?

[Atten007]

Yes I’m running it in Safari too

[dmsnell]

I've run through a number of scenarios and wonder if it's a timing issue. I couldn't get it to boot up in a Private Tab, and I also tried adding plugins and themes to the steps to see if giving it more time to have the files available before calling that code would help.

None of my attempts cleared the error.

For now it's probably best to use another browser, Firefox or Chrome, or use the temporary mode. It's possible there's something missing where we're not waiting for all of the files to be available; it's also possible there's some other mistake. I'm not sure how to find this yet or have any estimate on when it might be fixed though.

[adamziel]

@Atten007 are you still experiencing this issue? If so, would clearing the browser cache help?

On the face value the error says mysql and seems to be related to SQLite, but that's actually a red herring. wp-settings.php loads wp-load.php where function wp_check_php_mysql_versions() is defined regardless of the database backend.

What could cause this issue, though, is browser cache or a faulty Playground deployment. Playground ships WordPress as a single file bundling all WordPress PHP files in a concatenated form. There's also a map of where each file starts and ends in that file. You would see this exact error if there was a mismatch between the bundle and the map.

[adamziel]

This problem may or may not be intermittent, there's no way to know without further information from the reporter. I'm closing this for now. Let's reopen and investigate if the problem re-emerges.