This thread is resolved. Here is a description of the problem and solution.
Problem: Yoast plugin redirects are not working in other languages and return an error saying: "Error while saving redirect. You're redirecting to a target that returns a 301 HTTP code (permanently moved). Make sure the target you specify is directly reachable".
Solution: I kindly ask you to apply the workaround described in this ticket and let me know if the issue is solved: https://wpml.org/forums/topic/redirecting-target-not-directly-reachable/#post-3261225
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