normalizedList.flatMap is not a function vue draggable
TypeError: normalizedList.flatMap is not a function
at computeNodes (https://merchant-console.test/js/vendor.js:124305:37)
at computeComponentStructure (https://merchant-console.test/js/vendor.js:124344:15)
at Proxy.render (https://merchant-console.test/js/vendor.js:124465:32)
at renderComponentRoot (https://merchant-console.test/js/vendor.js:29923:44)
at componentEffect (https://merchant-console.test/js/vendor.js:33348:53)
at reactiveEffect (https://merchant-console.test/js/vendor.js:28121:24)
at effect (https://merchant-console.test/js/vendor.js:28096:9)
at setupRenderEffect (https://merchant-console.test/js/vendor.js:33331:82)
at mountComponent (https://merchant-console.test/js/vendor.js:33290:9)
at processComponent (https://merchant-console.test/js/vendor.js:33250:17)