Hi, Amit here, I am the WPML Support Manager, our current ticket queue is high, update your WPML plugins and make sure you meet the minimal requirements for running WPML before reporting an issue please - many tickets are resolved doing that
All of the known issues are documented in https://wpml.org/known-issues/ you can also use our support search to find helpful information and of course review our documentation before opening a ticket.
If you do need to open a ticket please make sure to provide us with all the needed information as described here https://wpml.org/faq/checklist-before-opening-a-ticket-in-wpml-support/
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This thread is resolved. Here is a description of the problem and solution.
Problema: Attivando WPML ricevo questo messaggio d'errore: Fatal error: Uncaught exception 'Exception' with message 'Error upgrading schema for table "icl_languages" Soluzione: Il problema era causato dalla precedente rimozione delle tabelle di WPML dal database senza però la rimozione delle opzioni del plugin. In questo modo all'attivazione WPML cercava di effettuare un aggiornamento piuttosto che una nuova installazione. Per risolvere usare la soluzione mostrata in questo post: https://wpml.org/forums/topic/mentre-attivavo-wpml-il-sito-e-crashato-e-da-errore/#post-1280069