Hello I sended part of the log file to help you diagnose it . Maybe some conflicts with other plugins.
The rised notifications of eventon slider are warnings.

HMWP erros are as bellow
– Line 1 : Got error ‘Access to the script ‘redirect:/index.php/’ has been denied (see security.limit_extensions)
– From line 2 to to line 9 : AH00124: Request exceeded the limit of 10 internal redirects due to probable configuration error. Use ‘LimitInternalRecursion’ to increase the limit if necessary. Use ‘LogLevel debug’ to get a backtrace.
– Line 11 : AH01071: Got error ‘PHP message: Erreur de la base de donn\xc3\xa9es WordPress Unknown column ‘t.term_order’ in ‘order clause’ pour la requ\xc3\xaate SELECT t.*, tt.* FROM tch_terms AS t INNER JOIN tch_term_taxonomy AS tt ON t.term_id = tt.term_id INNER JOIN tch_term_relationships AS tr ON tr.term_taxonomy_id = tt.term_taxonomy_id WHERE tt.taxonomy IN (‘language’, ‘post_translations’) AND tr.object_id IN (10) ORDER BY t.term_order ASC faite par require(‘wp-blog-header.php’), require_once(‘wp-includes/template-loader.php’), get_404_template, get_query_template, apply_filters(‘404_template’), WP_Hook->apply_filters, HideMyWP->custom_404_page, get_blog_permalink, get_permalink, get_page_link, _get_page_link, apply_filters(‘_get_page_link’), WP_Hook->apply_filters, PLL_Frontend_Filters_Links->_get_page_link, PLL_Filters_Links->_get_page_link, PLL_Translated_Post->get_language, PLL_Translated_Object->get_object_term, wp_get_object_terms, get_terms, WP_Term_Query->query, WP_Term_Query->get_termsPHP message: Erreur de la base de donn\xc3\xa9es WordPress Unknown column ‘t.term_order’ in ‘order clause’ pour la requ\xc3\xaate SELECT t.*, tt.* FROM tch_terms AS t INNER JOIN tch_term_taxonomy AS tt ON t.term_id = tt.term_id WHERE tt.taxonomy IN (‘language’) ORDER BY t.term_order ASC faite par require(‘wp-blog-header.php’), require_once(‘wp-includes/template-loader.php’), get_404_template, get_query_template, apply_filters(‘404_template’), WP_Hook->apply_filters, HideMyWP->custom_404_page, get_blog_permalink, get_permalink, get_page_link, _get_page_link, apply_filters(‘_get_page_link’), WP_Hook->apply_filters, PLL_Frontend_Filters_Links->_get_page_link, PLL_Filters_Links->_get_page_link, PLL_Links_Model->switch_language_in_link, PLL_Links_Directory->remove_language_from_link, PLL_Model->get_languages_list, get_terms, WP_Term_Query->query, WP_Term_Query->get_termsPHP message: Erreur de la base de donn\xc3\xa9es WordPress Unknown column ‘t.term_order’ in ‘order clause’ pour la requ\xc3\xaate SELECT t.*, tt.* FROM tch_terms AS t INNER JOIN tch_term_taxonomy AS tt ON t.term_id = tt.term_id WHERE tt.taxonomy IN (‘term_language’) ORDER BY t.term_order ASC faite par require(‘wp-blog-header.php’), require_once(‘wp-includes/template-loader.php’), get_404_template, get_query_template, apply_filters(‘404_template’), WP_Hook->apply_filters, HideMyWP->custom_404_page, get_blog_permalink, get_permalink, get_page_link, _get_page_link, apply_filters(‘_get_page_link’), WP_Hook->apply_filters, PLL_Frontend_Filters_Links->_get_page_link, PLL_Filters_Links->_get_page_link, PLL_Links_Model->switch_language_in_link, PLL_Links_Directory->remove_language_from_link, PLL_Model->get_languages_list, get_terms, WP_Term_Query->query, WP_Term_Query->get_terms’, referer: https://DOMAIN_NAME/

and it is recurrent error message