我試圖在索引中鏈接什么.html<link rel="stylesheet" href="{% static 'assets/css/main.css' %}"/>我也做過{%負載靜態%}我的文件結構是這樣的：signup/static/assets/css/main.csssettings.pySTATIC_URL = 'signup/static/'STATICFILES_DIRS = [    os.path.join(BASE_DIR, 'static'),]錯誤：[29/Feb/2020 17:19:31] "POST /postsign/ HTTP/1.1" 200 3445Not Found: /postsign/signup/static/assets/css/main.css我不明白那個/postign/是從哪里來的我的 urls.py 是這樣的：urlpatterns = [    path('admin/', admin.site.urls),    path('', views.signIn),    path('postsign/', views.postsign),    path('logout/', views.logout, name="log"),    path('signup/', views.signUp, name="signup"),    path('postsignup/', views.postsignup, name="postsignup"),    path('profile/', views.profile, name="prof"),]后簽名方法是：def postsign(request):    email = request.POST.get('Email')    passw = request.POST.get("Password")    try:        user = authe.sign_in_with_email_and_password(email, passw)    except:        message = "Invalid Username or Password"        return render(request, "signin.html", {"messg": message})    print(user['idToken'])    session_id = user['idToken']    request.session['uid'] = str(session_id)    return render(request, "index.html")Django 版本 3.0.3 如果有幫助