为什么这个没有运行？

$.get('https://www.luogu.com.cn/api/user/search?keyword='+nowurluid,{},function(res){
                        var users = res['users'];
                        if(users[0]!=null){
                            let usercolor=users[0]['color'];
                            console.log(usercolor);
                            if(usercolor!='Brown'){
                                if(document.querySelector('[data-v-71731098]')!=null) document.querySelector('[data-v-71731098]').remove();
                                let fakeTag = document.createElement('span');
                                fakeTag.className='lfe-caption';
                                if(usercolor == 'Gray') fakeTag.style.backgroundColor='rgb(191, 191, 191)';//开始
                                else if(usercolor == 'Blue') fakeTag.style.backgroundColor='rgb(14, 144, 210)';
                                else if(usercolor == 'Green') fakeTag.style.backgroundColor='rgb(94, 185, 94)';
                                else if(usercolor == 'Orange') fakeTag.style.backgroundColor='rgb(230, 126 34)';
                                else if(usercolor == 'Red') fakeTag.style.backgroundColor='rgb(231, 76, 60)';
                                else if(usercolor == 'Purple') fakeTag.style.backgroundColor='rgb(142, 68, 173)';//结束，没有运行
                                fakeTag.setAttribute('data-v-71731098','');
                                fakeTag.setAttribute('data-v-59a020e0','');
                                fakeTag.setAttribute('data-v-f9624136','');
                                fakeTag.innerHTML=getcookie('tag');
                                fakeTag.style.color='rgb(255,255,255)';
                                fakeTag.style.fontSize='0.875rem';
                                fakeTag.style.verticalAlign='middle';
                                let rfHanger=document.getElementsByClassName('ccf-badge')[0];
                                if(rfHanger==null) document.querySelector('#app > div.main-container > main > div > div.card.user-header-container.padding-0 > div.user-header-top > div.user-info > div.user-name').appendChild(fakeTag);
                                else document.querySelector('#app > div.main-container > main > div > div.card.user-header-container.padding-0 > div.user-header-top > div.user-info > div.user-name').insertBefore(fakeTag,rfHanger);
                            }
                        }
                    });