Split: I am getting a repeated 404 error in the browser console

This thread is resolved. Here is a description of the problem and solution.

Problem:
You are experiencing a 404 error in the browser console from the WPML “Account / Installer” dashboard when it tries to load a Slovenian localization file (sl.json) that does not exist on your server. This issue persists even when all WPML plugins are up to date.
Solution:
First, ensure that the OTGS Installer plugin is deactivated and deleted, as it might be causing the issue. Next, try deactivating all plugins except for WPML to check if the issue still exists. Then, navigate to WPML → Support → Installer Support and click on the "Check Now" button to force a check. Additionally, please provide screenshots of the problem to help us better understand the issue.

If this solution does not resolve the issue or seems irrelevant due to being outdated or not applicable to your case, we recommend opening a new support ticket. We also highly recommend checking related known issues at https://wpml.org/known-issues/, verifying the version of the permanent fix, and confirming that you have installed the latest versions of themes and plugins. For further assistance, please visit our support forum at WPML support forum.

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This topic is split from https://wpml.org/forums/topic/updating-versions-problem/

Tagged: Exception

This topic contains 1 reply, has 0 voices.

Last updated by Andrey 1 month ago.

Assisted by: Andrey.

Author	Posts
November 24, 2025 at 4:10 pm #17605663
lencS	I have managed to update with clean installs. But now, I am getting a repeated 404 error in the browser console coming from the WPML “Account / Installer” dashboard. Error in console: GET hidden link 404 (Not Found) frame_ant.js:2 window.fetch frame_ant.js:2 xf frame_ant.js:2 kf dashboard.js?ver=485900:2 value ... admin.php?page=otgs-installer-support:2133 Problem: WPML is trying to load a localization file for Slovenian (sl.json) that does not exist on your server, which results in a 404 on every admin page where the WPML Installer / Account dashboard runs. What I need clarified: Why is WPML requesting hidden link when there is no Slovenian localization available? Is this expected behavior or a missing file on the WPML side? Can you provide the missing sl.json file or correct the request so the dashboard stops producing 404 errors? This error occurs even when all WPML plugins are up to date. Environment details: WordPress version: 6.8.3 PHP version: 8.2 WPML Multilingual CMS: latest WPML String Translation: latest Browser: Chrome (also reproducible on others) Please advise how to resolve this or if this is something that needs to be fixed on the WPML server side. Thank you.
November 24, 2025 at 4:22 pm #17605690
Andrey WPML Supporter since 06/2013 Languages: English (English ) Russian (Русский ) Timezone: Europe/Kyiv (GMT+02:00)	In case you still have the OTGS Installer plugin activated, please deactivate it. You can delete it. Does the same issue exist if you temporarily deactivate all the plugins except WPML? What are the results if you go to WPML → Support → Installer Support and click on the button "Check Now"? Please upload some screenshots to show the problem.