Fatal error after update

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My client updated her site on her own, and it went down. There were lots of error messages, I found many missing files and put them up, those errors went away, and now this is the error:

Fatal error: Call to undefined function determine_locale() in /home/content/04/5575704/html/wp-includes/script-loader.php on line 1096

Closed. This question is off-topic. It is not currently accepting answers.

---

Questions that are too localized (such as syntax errors, code with restricted access, hacked sites, hosting or support issues) are not in scope. See how do I ask a good question?

Closed 6 years ago.

Improve this question

My client updated her site on her own, and it went down. There were lots of error messages, I found many missing files and put them up, those errors went away, and now this is the error:

Fatal error: Call to undefined function determine_locale() in /home/content/04/5575704/html/wp-includes/script-loader.php on line 1096

• fatal-error

Share Improve this question edited Feb 14, 2019 at 6:52 Krzysiek Dróżdż 25.6k99 gold badges5353 silver badges7474 bronze badges asked Feb 14, 2019 at 1:46 ShannaShanna 1111 bronze badge 1

• What did the client update? What version of Wordpress is the client using right now? – dan webb Commented Feb 14, 2019 at 1:52

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1 Answer 1

Sorted by: Reset to default 0

It looks like something went wrong during update and not all files are on the server or some of them are corrupted.

1. Go to wordpress and download a package with WP.
2. Go login to FTP of your clients site.
3. Delete wp-includes and wp-admin directories.
4. Upload these directories from original WP package.
5. Upload all files in root directory of that package (index.php, wp-activate.php and so on).

After these steps everything should be fine.