This thread is resolved. Here is a description of the problem and solution.
Problem:
You are experiencing an 'aggiornamento fallito: undefined' error when attempting to update the WPML, WPML String Translation, and Advanced Custom Fields Multilingual plugins.
Solution:
We recommend following the steps outlined in the support forum to resolve this issue. Please visit the following link for detailed instructions: https://wpml.org/forums/topic/update-failed-undefined-12/
If this solution does not resolve your issue or seems outdated, we highly recommend checking related known issues at https://wpml.org/known-issues/, verifying the version of the permanent fix, and confirming that you have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 the problem persist, please do not hesitate to open a new support ticket for further assistance. You can do so here: WPML Support Forum.
This is the technical support forum for WPML - the multilingual WordPress plugin.
Everyone can read, but only WPML clients can post here. WPML team is replying on the forum 6 days per week, 22 hours per day.
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Last updated by 1 week, 5 days ago.
Assisted by: Mihai Apetrei.
