firebaseを使ったredirect処理がうまく走らない

以下のviews.pyのpost_create関数の中でredirectを実行しlistに遷移しようとすると、list関数の中のexcept文が実行される問題で困っています。
これはどういったことが原因で発生すると考えられるでしょうか？
以下はそれぞれ関係するコードです。
views.py

from django.shortcuts import render
import pyrebase
from django.contrib import auth
import time
from datetime import datetime, timezone
import pytz
from django.shortcuts import redirect

config = {
    "apiKey":
    "authDomain":
    "databaseURL": 
    "projectId": 
    "storageBucket": 
    "messagingSenderId": 
    "appId": 
}
firebase = pyrebase.initialize_app(config)

authe = firebase.auth()
database=firebase.database()
def signIn(request):

    return render(request, "signIn.html")

def list(request):
    email=request.POST.get('email')
    password = request.POST.get("password")
    try:
        user = authe.sign_in_with_email_and_password(email,password)
    except:
        errorMessage="invalid credentials"
        return render(request,"signIn.html",{"errorMessage":errorMessage})
    session_id=user['idToken']
    request.session['uid']=str(session_id)
    import datetime
    idtoken = request.session['uid']
    a = authe.get_account_info(idtoken)
    a = a['users']
    a = a[0]
    a = a['localId']

    timestamps = database.child('users').child(a).child('reports').shallow().get().val()
    lis_time=[]
    if timestamps:
        for i in timestamps:

            lis_time.append(i)

        lis_time.sort(reverse=True)

        work = []

        for i in lis_time:

            wor=database.child('users').child(a).child('reports').child(i).child('work').get().val()
            work.append(wor)

        date=[]
        for i in lis_time:
            i = float(i)
            dat = datetime.datetime.fromtimestamp(i).strftime('%H:%M %d-%m-%Y')
            date.append(dat)


        comb_lis = zip(lis_time,date,work)
        name = database.child('users').child(a).child('details').child('name').get().val()
        return render(request, "welcome.html",{'comb_lis':comb_lis,"e":email})
    else:
        return render(request, "welcome.html",{"e":email})



def logout(request):
    auth.logout(request)
    return redirect('/')


def signUp(request):

    return render(request,"signup.html")
def postsignup(request):

    name=request.POST.get('name')
    email=request.POST.get('email')
    password=request.POST.get('password')
    try:
        user=authe.create_user_with_email_and_password(email,password)
    except:
        errorMessag="Unable to create account try again"
        return render(request,"signup.html",{"errorMessage":errorMessag})

    uid = user['localId']

    data={"name":name,"status":"1"}

    database.child("users").child(uid).child("details").set(data)
    return redirect('/')

def create(request):

    return render(request,'create.html')


def post_create(request):



    tz= pytz.timezone('Asia/Tokyo')
    time_now= datetime.now(timezone.utc).astimezone(tz)
    millis = int(time.mktime(time_now.timetuple()))
    work = request.POST.get('work')
    progress =request.POST.get('progress')
    url = request.POST.get('url')
    idtoken= request.session['uid']
    a = authe.get_account_info(idtoken)
    a = a['users']
    a = a[0]
    a = a['localId']
    data = {
        "work":work,
        'progress':progress,
        'url':url
    }
    database.child('users').child(a).child('reports').child(millis).set(data)
    return  redirect("/list/")
    # return render(request,'welcome.html', {'e':name})

def post_check(request):

    import datetime

    time = request.GET.get('z')

    idtoken = request.session['uid']
    a = authe.get_account_info(idtoken)
    a = a['users']
    a = a[0]
    a = a['localId']

    work =database.child('users').child(a).child('reports').child(time).child('work').get().val()
    progress =database.child('users').child(a).child('reports').child(time).child('progress').get().val()
    img_url = database.child('users').child(a).child('reports').child(time).child('url').get().val()
    i = float(time)
    dat = datetime.datetime.fromtimestamp(i).strftime('%H:%M %d-%m-%Y')
    name = database.child('users').child(a).child('details').child('name').get().val()

    return render(request,'post_check.html',{'w':work,'p':progress,'d':dat,'e':name,'i':img_url})

create.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Sign</title>
<style>
        div{
        position : absolute;
        right : 10px;
        top : 5px
        }
    </style>
</head>
<body>
<div>

<button type="button" onclick="location.href='{% url 'logout' %}'">Logout</button>
    </div>
<H2>Create Reading Report</H2>
<form action="/post_create/" method="post">
    {% csrf_token %}
    Title :
    <input type="text" name="work" required><br><br>
    Predicting:
    <textarea rows="5" cols="40" name="progress" required></textarea>
    <br><br>
    Vizualizing:
    <input type="file" name="files[]" id="files" required>
    <input type="hidden" name="url" id="url">
    <button type="button" onclick="uploadimage()">Upload</button><br><br>
    <input type="submit" value="Submit">



</form>
</body>
<script src="https://www.gstatic.com/firebasejs/6.4.0/firebase-app.js"></script>
 <script src="https://www.gstatic.com/firebasejs/6.4.0/firebase-storage.js"></script>
<script>
    var config = {
   apiKey: 
    authDomain: 
    databaseURL: 
    storageBucket:
    messagingSenderId: 
  };

  firebase.initializeApp(config);

        function uploadimage(){
      var storage = firebase.storage();
      //getting element by id
      var file = document.getElementById("files").files[0];
      var storageRef = storage.ref();
      var thisref = storageRef.child(file.name).put(file);
      thisref.on("state_changed", function(snapshot){
      console.log("file uploaded succesfully");
      },
      function(error){
      },
    function() {
  // Upload completed successfully, now we can get the download URL
    thisref.snapshot.ref.getDownloadURL().then(function(downloadURL) {
    console.log('File available at', downloadURL);
    document.getElementById("url").value = downloadURL;
    alert("file uploaded succesfully");
  });
  });
}
</script>

</html>

urls.py

from django.contrib import admin
from django.urls import path
from . import views

urlpatterns = [
    path('admin/', admin.site.urls),
    path("",views.signIn),
    path("list/", views.list),
    path("logout/", views.logout, name="logout"),
    path("signup/", views.signUp, name="signup"),
    path("postsignup/", views.postsignup, name="postsignup"),
    path('create/', views.create, name='create'),
    path('post_create/', views.post_create, name='post_create'),
    path('post_check/',views.post_check,name='post_check'),
    path('delete/',views.post_check,name='post_check'),
]