multisite with wpml on clear cache raises warning

[sissibieber]

I have a multisite installation, where all sites except 1 are using wpml, and others not. When I update a plugin (I have selected the option to delete the cache when a plugin is updated), I get the following warning - strange enough for the blog id 3 which has wpml not active. I also raised this issue with wpml support
wpml has a filter on "url_to_postid()" function, which should not be triggered when the plugin is not active.
latest version of cache-enabler, wpml and wp

[13-May-2024 13:24:58 UTC] PHP Warning: Trying to access array offset on value of type bool in /usr/www/users/client/content/plugins/sitepress-multilingual-cms/inc/absolute-links/absolute-links.class.php on line 109 [13-May-2024 13:24:58 UTC] Backtrace (BlogId: 3, PostId: 0) from warning 'Trying to access array offset on value of type null' at /usr/www/users/client/content/plugins/sitepress-multilingual-cms/inc/absolute-links/absolute-links.class.php 109: /usr/www/users/client/content/plugins/sitepress-multilingual-cms/sitepress.class.php 4267 calling _process_generic_text() | /usr/www/users/client/cms/wp-includes/class-wp-hook.php 324 calling url_to_postid() | /usr/www/users/client/cms/wp-includes/plugin.php 205 calling apply_filters() | /usr/www/users/client/cms/wp-includes/rewrite.php 502 calling apply_filters() | /usr/www/users/client/content/plugins/cache-enabler/inc/cache_enabler_disk.class.php 232 calling url_to_postid() | /usr/www/users/client/content/plugins/cache-enabler/inc/cache_enabler.class.php 2175 calling cache_iterator() | /usr/www/users/client/content/plugins/cache-enabler/inc/cache_enabler.class.php 1995 calling clear_page_cache_by_url() | /usr/www/users/client/content/plugins/cache-enabler/inc/cache_enabler.class.php 1617 calling clear_page_cache_by_site() | /usr/www/users/client/content/plugins/cache-enabler/inc/cache_enabler.class.php 612 calling clear_site_cache() | /usr/www/users/client/content/plugins/cache-enabler/inc/cache_enabler.class.php 1592 calling each_site() | /usr/www/users/client/content/plugins/cache-enabler/inc/cache_enabler.class.php 185 calling clear_complete_cache() | /usr/www/users/client/cms/wp-includes/class-wp-hook.php 324 calling on_upgrade() | /usr/www/users/client/cms/wp-includes/class-wp-hook.php 348 calling apply_filters() | /usr/www/users/client/cms/wp-includes/plugin.php 517 calling do_action() | /usr/www/users/client/cms/wp-admin/includes/class-plugin-upgrader.php 421 calling do_action() | /usr/www/users/client/cms/wp-admin/update.php 51 calling bulk_upgrade() | /usr/www/users/client/cms/wp-admin/network/update.php 17 calling require()