如何修复Uncaught TypeError：无法读取未定义的属性“Extend”？

Question

我在Themeforest购买了名为POL的主题，最近我试图从一个购物车转到woocommerce，我发现主题的Visual Composer插件中有一个与Woocommerce管理面板相冲突。导致该问题的代码位于jquery中，每个chrome控制台可能有一个拼写错误或错误关闭的参数。

错误是“未捕获类型错误：无法读取属性'扩展'未定义”，接下来是与jquery / jquery migrate相关的一些行。

有人可以帮我解决这个问题吗？

Chrome Console Error Picture

完整代码：

(function($, $window){

var templateOptions = {
    custom: {
        escape: /\{\{([^\}]+?)\}\}(?!\})/g,
        evaluate: /<#([\s\S]+?)#>/g,
        interpolate: /\{\{\{([\s\S]+?)\}\}\}/g
    },
    default: {
        escape: /<%-([\s\S]+?)%>/g,
        evaluate: /<%([\s\S]+?)%>/g,
        interpolate: /<%=([\s\S]+?)%>/g
    }
};

function initViews(){

    /**
     * Icon select view
     */

    window.VcGGTIconView = vc.shortcode_view.extend( {
        events: function () {
            return _.extend( {
                'click button': 'buttonClick'
            }, window.VcToggleView.__super__.events );
        },
        buttonClick: function ( e ) {
            e.preventDefault();
        },
        changeShortcodeParams: function ( model ) {
            var params,
                $container;

            if ( ! this.iconTemplate ) {
                this.iconTemplate = this.$el.find( '.vc_ggt_icon-container' ).html();
                if( ! this.iconTemplate){ // old version
                    this.iconTemplate = '<div class="ggt-param-template">'
                    + '<h4 class="wpb_element_title"><i class="vc_element-icon icon-ggt-icon"></i>Icon</h4>'
                    + '<div class="vc_ggt_module_container vc_ggt_icon-container">'
                    + '<div class="vc_ggt_icon-title vc_admin_label"><span class="ggt-vc-icon-title">Title: {{ params.icon_title }}</span></div>'
                    + '<i class="mdi {{ params.icon_class }}"></i></div>'
                    + '</div';
                    this.oldVerTemplate = true;
                }
            }
            if ( ! this.$wrapper ) {
                this.$wrapper = this.$el.find( '.wpb_element_wrapper' );
            }

            window.VcGGTIconView.__super__.changeShortcodeParams.call( this, model );

            params = model.get( 'params' );
            if ( _.isObject( params ) ) {
                var $element = $( _.template( this.iconTemplate, { params: params }, templateOptions.custom ) );

                $container = this.$wrapper.find( '.vc_ggt_icon-container' );

                if(this.oldVerTemplate){
                    if($container.length){ // new version
                        this.$wrapper.html( $element.html() );
                    }
                    else{
                        this.$wrapper.append($element);
                    }
                }
                else{
                    $container.html( $element );
                }
            }
        }
    } );


    /**
     * Button view
     */

    window.VcGGTButtonView = vc.shortcode_view.extend( {
        events: function () {
            return _.extend( {
                'click .theme-btn': 'buttonClick'
            }, window.VcToggleView.__super__.events );
        },
        buttonClick: function ( e ) {
            e.preventDefault();
        },
        changeShortcodeParams: function ( model ) {
            var params,
                btnColorClass = "",
                $container,
                $btn,
                $icon;

            if ( ! this.btnTemplate ) {
                this.btnTemplate = this.$el.find( '.vc_ggt_button-container' ).html();

                if( ! this.btnTemplate){ // old version
                    this.btnTemplate = '<div class="ggt-param-template"><h4 class="wpb_element_title"><i class="vc_element-icon icon-ggt-button"></i>Button</h4>' + '<div class="vc_ggt_module_container vc_ggt_button-container">' +
                    '<a href="#" class="theme-btn ggt-vc-button btn-{{ params.button_size }} icon-{{ params.icon_position }}">{{ params.button_text }}</a>' +
                    '</div></div>';
                    this.oldVerTemplate = true;
                }
            }
            if ( ! this.$wrapper ) {
                this.$wrapper = this.$el.find( '.wpb_element_wrapper' );
            }

            window.VcGGTButtonView.__super__.changeShortcodeParams.call( this, model );
            params = model.get( 'params' );

            switch(params.button_color_mode){
                case "theme":
                    btnColorClass = "main-color";
                    break;

                case "theme_alt":
                    btnColorClass = "main-color-alt";
                    break;

                case "select":
                    btnColorClass = "theme-color-preset-" + params.button_color_preset;
                    break;

                case "custom":
                    btnColorClass = "custom-color";
                    break;

                case "none":
                    btnColorClass = "no-color";
                    break;

                default:
                    btnColorClass = "no-color";
                    break;

            }

            if ( _.isObject( params ) ) {
                var $element = $( _.template( this.btnTemplate, { params: params }, templateOptions.custom ) );
                $container = this.$wrapper.find( '.vc_ggt_button-container' );

                if(this.oldVerTemplate){
                    if($container.length){ // new version
                        this.$wrapper.html( $element.html() );
                    }
                    else{
                        this.$wrapper.append($element);
                    }
                }
                else{
                    $container.html( $element );
                }

                $btn = this.$el.find(".theme-btn");

                $btn.addClass(btnColorClass);

                if(params.button_color_mode === "custom"){
                    $btn.css({
                        "background-color": params.button_color_custom,
                        "color": params.button_color_custom_inv
                    });
                }

                if(params.add_icon === "yes"){
                    $icon = $('<i class="ggt-vc-btn-icon ' + params.icon_class + '"></i>');
                    if(params.icon_position === "left"){
                        $btn.prepend($icon);
                    }
                    else if(params.icon_position === "right"){
                        $btn.append($icon);
                    }
                }
            }
        }
    } );

    /**
     * End of views
     */
}

$(document).ready(function() {
    initViews();
});

}(jQuery, jQuery(window)));