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The error returns when I activate WooCommerce Shipping - DPD baltic. I do see there is an update available, perhaps try updating it and maybe they have resolved the issue with the latest update?
I can't recommend downgrading, as there have been lots of changes moving forward that can cause compatibility issues with some more popular plugins. But if you need to find an older version of WPML, you can find them at https://wpml.org/download/wpml-multilingual-cms/?section=changelog