jQuery冲突导致错误？

Question

I recently switched from Squarespace to Wordpress. I am currently using the Bridge theme, but this comes with Visual Composer. I don't really like VC, so I tried installing Beaver Builder instead. However, I get some errors in the console when starting the Page Builder. This impact the Page Builder as I cannot use text editor. I can't type text in the text editor & also the icons above the text area frame are not visible.

Below, you can see the errors:

"Uncaught Error: no such method 'instance' for menu widget instance" op rij 2 van {bestand}.

Error: no such method 'instance' for menu widget instance
    at Function.error (http://www.petasos.be/wp-includes/js/jquery/jquery.js?ver=1.12.4:2:1814)
    at HTMLUListElement.<anonymous> (http://www.petasos.be/wp-content/themes/bridge/js/plugins.js?ver=4.7.5:38:8376)
    at Function.each (http://www.petasos.be/wp-includes/js/jquery/jquery.js?ver=1.12.4:2:2881)
    at a.fn.init.each (http://www.petasos.be/wp-includes/js/jquery/jquery.js?ver=1.12.4:2:846)
    at a.fn.init.$.fn.(anonymous function) [as menu] (http://www.petasos.be/wp-content/themes/bridge/js/plugins.js?ver=4.7.5:38:8111)
    at $.(anonymous function).(anonymous function)._create (http://www.petasos.be/wp-includes/js/jquery/ui/autocomplete.min.js?ver=1.11.4:11:2191)
    at $.(anonymous function).(anonymous function)._create (http://www.petasos.be/wp-content/themes/bridge/js/plugins.js?ver=4.7.5:38:6664)
    at $.(anonymous function).(anonymous function)._createWidget (http://www.petasos.be/wp-content/themes/bridge/js/plugins.js?ver=4.7.5:38:9651)
    at new $.(anonymous function).(anonymous function) (http://www.petasos.be/wp-content/themes/bridge/js/plugins.js?ver=4.7.5:38:5990)
    at HTMLInputElement.<anonymous> (http://www.petasos.be/wp-content/themes/bridge/js/plugins.js?ver=4.7.5:38:8796)"

As the error states there are some issues with my plugins.js & I deactivated this file. Next, Beaver Builder works. But when I disable this file, a lot of JS effects on the website do no longer function.

Does anyone have experience with this kind of error? I think it is related to a jQuery version conflict, but I am not sure? If you need more information, ask & I'll provide.

Update after installing jQuery plugin:

Below, installing the jQuery plugin was suggested. Error messages in the console have changed, but still having the issue with the text editor.

Error: no such method 'instance' for menu widget instance
    at Function.error (http://www.petasos.be/wp-content/plugins/jquery-updater/js/jquery-3.2.1.min.js?ver=3.2.1:2:1979)
    at HTMLUListElement.<anonymous> (http://www.petasos.be/wp-content/themes/bridge/js/plugins.js?ver=4.7.5:38:8376)
    at Function.each (http://www.petasos.be/wp-content/plugins/jquery-updater/js/jquery-3.2.1.min.js?ver=3.2.1:2:2715)
    at a.fn.init.each (http://www.petasos.be/wp-content/plugins/jquery-updater/js/jquery-3.2.1.min.js?ver=3.2.1:2:1003)
    at a.fn.init.$.fn.(anonymous function) [as menu] (http://www.petasos.be/wp-content/themes/bridge/js/plugins.js?ver=4.7.5:38:8111)
    at $.(anonymous function).(anonymous function)._create (http://www.petasos.be/wp-includes/js/jquery/ui/autocomplete.min.js?ver=1.11.4:11:2191)
    at $.(anonymous function).(anonymous function)._create (http://www.petasos.be/wp-content/themes/bridge/js/plugins.js?ver=4.7.5:38:6664)
    at $.(anonymous function).(anonymous function)._createWidget (http://www.petasos.be/wp-content/themes/bridge/js/plugins.js?ver=4.7.5:38:9651)
    at new $.(anonymous function).(anonymous function) (http://www.petasos.be/wp-content/themes/bridge/js/plugins.js?ver=4.7.5:38:5990)
    at HTMLInputElement.<anonymous> (http://www.petasos.be/wp-content/themes/bridge/js/plugins.js?ver=4.7.5:38:8796)

Answer 1

WordPress automatically calls the core jQuery, which may not be the most recent version . You could try running jQuery Updater and see if this pertains to the jQuery version.

Another thing to look for is if more than one jQuery script is being called on the page - an easy way to check is to simply export the page as static HTML and search for any duplicate/redundant calls of the script.