umbraco Failed to execute 'getComputedStyle' on 'Window': parameter 1 is not of type 'Element' I fixed a previous error by making all the groups tabs again which was failing on the if in the code snippet below but now the getComuptedStyle errors with the above

if (!nodeComputedStyle) {
                    if (node instanceof DocumentFragment)
                        return !0;
                    nodeComputedStyle = this.doc.defaultView.getComputedStyle(node)
                }