[Waiting for user feedback] I have a site with WooCommerce and WPallimport and the Multilingual import isn't working

Background of the issue:
I have a site with WooCommerce and WPallimport. We have imports for main languages and also imports for multilingual content. We have scheduled imports via CLI. When trying to import in the main language, everything works as expected, but when trying to import the different language files, the system never completes the process. We have this log: Fatal error: Uncaught TypeError: call_user_func_array(): Argument #1 ($callback) must be a valid callback, class WCML_Synchronize_Product_Data does not have a method "delete_empty_post_meta_for_translations" in /home/photomet/www/wp-includes/class-wp-hook.php:326. Stack trace: #0 /home/photomet/www/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters(NULL, Array) #1 /home/photomet/www/wp-includes/plugin.php(517): WP_Hook->do_action(Array) #2 /home/photomet/www/wp-includes/meta.php(1068): do_action('deleted_post_me...', Array, 179265, '_wcml_average_r...', NULL) #3 /home/photomet/www/wp-includes/post.php(3758): delete_metadata_by_mid('post', 3918510) #4 /home/photomet/www/wp-content/plugins/wp-all-import-pro/addon-api/classes/post-data-importer.php(88): wp_delete_post('179265', true) #5 /home/photomet/www/wp-content/plugins/wp-all-import-pro/models/import/record.php(653): WpaiAddonAPIPMXI_Addon_Post_Data_Importer->delete_records(Array) #6 /home/photomet/www/wp-content/plugins/wp-all-import-pro/classes/cli.php(98): PMXI_Import_Record->execute(Object(Closure)) #7 [internal function]: PMXI_Cli->run(Array, Array) #8 hidden link): call_user_func(Array, Array, Array) #9 [internal function]: WP_CLIDispatcherCommandFactory::WP_CLIDispatcher{closure}(Array, Array) #10 hidden link): call_user_func(Object(Closure), Array, Array) #11 hidden link): WP_CLIDispatcherSubcommand->invoke(Array, Array, Array) #12 hidden link): WP_CLIRunner->run_command(Array, Array) #13 hidden link): WP_CLIRunner->run_command_and_exit() #14 hidden link): WP_CLIRunner->start() #15 hidden link): WP_CLIBootstrapLaunchRunner->process(Object(WP_CLIBootstrapBootstrapState)) #16 hidden link): WP_CLIbootstrap() #17 hidden link): include('hidden link...') #18 /usr/local/bin/wp(4): include('hidden link...') #19 {main} thrown in /home/photomet/www/wp-includes/class-wp-hook.php on line 326. Error: Παρουσιάστηκε ένα κρίσιμο σφάλμα σε αυτόν τον ιστότοπο. Μάθετε περισσότερα για την αποσφαλμάτωση του WordPress. Παρουσιάστηκε ένα κρίσιμο σφάλμα σε αυτόν τον ιστότοπο.

Symptoms:
The system never completes the process when trying to import different language files, and a fatal error occurs.

Questions:
What can we do to resolve this?