The rollback test is a useful way to isolate the problem because the site works again with ElementsKit Lite 4.0.2. Since the error appears immediately after upgrading to 4.0.3 and involves Elementor’s settings handling, comparing the changes between the two plugin versions could help identify the conflicting code. Checking the nested document asset discovery process and how widget settings are passed to Elementor may also provide a clearer direction for troubleshooting. Keeping a working backup before plugin updates is also a good practice, especially on production WordPress sites.
