WordPress 5.5 Update Breaks Plugins – How to Fix it with jQuery Migrate Helper?
WordPress 5.5 “Eckstine” brings a lot of awesome changes to the core. Removing the jQuery Migrate 1.x in WP 5.5. was one of the planned stages in terms of updating the jQuery version.
Despite the recommendation for developers to get ready for this jQuery update by testing and updating their code, this update still has caught many developers unprepared.
Have some of your WordPress plugins