[Gelöst] Translation is stuck "In progress" and can't publish the page

Problem:
The client is trying to translate the homepage of their website, but the translation process is stuck 'In progress'. Additionally, the English version of the homepage results in a 404 error.
Solution:
If you're experiencing a similar issue where your translation is stuck and the translated page shows a 404 error, we recommend you try the following steps:
1. Clear the Cache in WPML.
2. Remove ghost entries from the translation tables.
3. Fix element_type collation.
4. Fix WPML table collation.
5. Set language information.

Please note that this solution might be outdated or not applicable to your specific case. 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. If the issue persists, please open a new support ticket at WPML support forum.