Hello,
Thanks for opening a topic about your problem.
I just tried to define a favicon in the customizer options on a test site, and could not spot any problems.
The problem might be specific to your website. I’d recommend to follow the usual troubleshooting steps.
- Use the latest software versions : make sure WordPress, your theme and plugins are all updated to their latest versions.
- In your WordPress admin, go to settings > general and verify that your WordPress Address (URL) and Site Address (URL) are identical. The website will not run properly if the urls are different.
- Cache plugin : if you use a server cache or cache plugin, clear it’s cache content and disable caching via it’s settings.
- Browser :
- Check for plugin conflict : Install the WP official Health check plugin. Activate the troubleshooting mode. Then deactivate all of your plugins. If it fixes the issue, re-activate your plugins one by one, until you identify the plugin in conflict.
- Child theme : activate the parent theme if you use a child theme
- Theme problem : try to activate a WordPress default theme ( Twenty … )
- Javascript : make sure you did not insert custom javascript code ( like analytics, subscription popup… ), for example in a widget, that could break your site.
To log possible code errors on your website, enable WP_DEBUG mode and log the output of the debug.log to a file that you can share on https://pastebin.com/ or https://gist.github.com ( to get a debug log file you need to set define( 'WP_DEBUG', true );
and define( 'WP_DEBUG_LOG', true );
in your wp_config.php
file.