reneD-21

Problem:
If you're experiencing an internal server error when trying to translate pages using WPML, particularly with pages containing images without metadata, this might be due to a known issue.
Solution:
We recommend waiting for the upcoming WPML 4.8.1 update, which addresses this issue. You can check the progress and details of this known issue on our errata page: WPML 4.8 Fatal Error When Translating Pages Containing Images Without Metadata.

If this solution does not apply to your case, or if it seems outdated, please open a new support ticket.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.