This thread is resolved. Here is a description of the problem and solution.
Problem:
You are trying to display flags in the language switcher on your website, but they appear as broken images even after clearing both the site cache and WPML cache.
Solution:
We recommend following the steps outlined in a similar case which resolved the issue. Please check the thread on our forum for detailed instructions: https://wpml.org/forums/topic/custom-language-switchers-flags-not-showing/#post-14457603.
If this solution does not apply to your case, or if it seems outdated, we highly recommend checking related known issues at https://wpml.org/known-issues/, verifying the version of the permanent fix, and confirming that you have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. Should you need further assistance, please do not hesitate to open a new support ticket or visit our support forum at https://wpml.org/forums/forum/english-support/.
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