Dashboard All Messed Up After Update

The front looks fine to me. This is a (weird) css problem, in that it’s all gone. Try another browser, flush some more, but also flush server cache.

It looks like you either have an incomplete update, or have plugins that would normally combine CSS and JS files which was not quite ready for the update.

I would suggest attempting a manual update first, to do so download a fresh copy of the latest.zip file for this release (top right on this page) to your computer, and use that to copy up. You may need to delete the wp-admin and wp-includes folders on your server (NOTE: do not delete the?wp-content?directory or your?wp-config.php?file)?Read the?Manual Update directions first.

I realise this is probably quite unhelpful, but I logged back in this morning and it’s all fine. Hopefully it was just taking something a little while to click into place.

If you are using a CDN or perhaps an odd combination of caching mechanisms this can have an effect on things like css. A CDN can take several minutes to completely flush around the world, then a few more to re-build itself. Throw in a failed/corrupt update….

• This reply was modified 1 year, 3 months ago by Sean.

@joemd we’ve seen some sites with this behavior but have not tracked down the ultimate reason yet. For us, load-styles.php was resulting in a 404 when running PHP 8.0 (but not 7.4 or 8.1). The page outputs a cache header so to see this issue consistently you need to hard refresh or use a disabled cache with the inspector open. Have not had time to do more debugging yet, but I will update here if I go back and figure it out.

Not sure what caused the issue.

Solution One – as @boblindner explained, changing the PHP version to 7.4 worked for me. But make sure double check with plugins and theme compatibility.

Solution Two – Adding the below line to “wp-config.php” also worked for me.
define( 'CONCATENATE_SCRIPTS', false );

Add it above the /* Add any custom values between this line and the “stop editing” line. */ line.

In WordPress, by default, JavaScript and CSS files used in the admin area are concatenated into a single file to reduce the number of HTTP requests and potentially improve loading times. However, for some reason concatenating those files caused some issues with the loading of load-styles.php.

• This reply was modified 1 year, 3 months ago by Web Alchemist.

@karuthil Solution one worked for me too

@karuthil I didn’t try solution one because php 7.4 is unsupported, but solution two worked for me. Thanks!

Final solution for this issue: In cPanel PHP OPTIONS change max_execution_time to 6000 and max_input_time to 9000

Thank you karuthil(@karuthil)

Adding the below line to “wp-config.php” also worked for me.
define( 'CONCATENATE_SCRIPTS', false ); solved the issue

Regards

Noticed this issue on my dash for the last few weeks — it comes and goes with no rhyme or reason. Tried solution two and it worked for me! Thanks!

@boblindner Thanks a lot Bob. I changed the PHP version and the issue was solved. Muchas gracias!

I had this exact issue today, with WP 6.3.1 and PHP 8.0.30 on hosted Linux but not on local Windows. Adding the line to wp-config.php fixed it, and removing that line made it reappear. It doesn’t seem to hurt performance in my case. Thanks for figuring this out!

I had the same error appeared this week on 2 of 6 websites I own. !

Adding to Wp-config define( 'CONCATENATE_SCRIPTS', false ); fix it only in half, all the other dashboard pages makes on all other pages:
Forbidden
You don’t have permission to access this resource.

I try setting the htcacces file with this line but it didnt work.

set_time_limit(9000);

Note that the front end show just fine.

Hi! I found the solution to the problem.

(I try by HTCaccess file it didn’t work.)

If you are in DirectAdmin / or Cpanel.
Go to your PHP selector page. (I’m in PHP 8.2)

Change:
max_execution_time (The maximum time in seconds a script is allowed to run before it is terminated.) to 6000

max_input_time (The maximum time in seconds a script is allowed to parse imput data.) to 9000

Go to your Wp-Config.php file, at the bottom add the line :
define( ‘CONCATENATE_SCRIPTS’, false );

Everything went from wordpress messed up dashboard to normal with this.
It fix it all for me!

DeathGreeter666