second method to render api response - browser site resulting in error

meetingForm.html

{% extends "main/base_templates/base.html" %}


{% block content %}

  {% if result %}
   -----  call api with -----
    {{ message }}
  {% else %}
    <div> enter your details here </div>
  {% endif %}



<form target="_blank" action = "" method = "POST">
  {% csrf_token %}
  <label for="startDate">Start Date: </label>
  <input id="startDate" type="date" name="startDate">
  <br>
  <label for="endDate">End Date: </label>
  <input id="endDate" type="date" name="endDate"><br>
  <input type="submit" value="OK">
</form>

{% endblock content%}

meetingList.html

{% extends "main/base_templates/base.html" %} {% block content %}

<div>
    {% if message %}
    -----  call api with -----
     {{ message }}
   {% else %}
     <div> enter your details here </div>
   {% endif %}
 

</div>

{% endblock content%}

view2.py

def credentials():
    print("sending tokens")
    '''
        to get access tokens from json file
        refresh it to get working tokens
    '''
    mycredentialJson = None
    with open(dir_path+"/"+'gotomeeting/refresh_tokens.json' , 'r') as f:
        mycredentialJson = json.load(f)
    
    # print("sending credentials : ",mycredentialJson)
    return mycredentialJson


def getMeetingData(request):
    myTokens = credentials()
    print("....sending a", type(myTokens))
    return render(request,"getdata/meetingData.html",{'title':'meeting-data',
    'message':'create a form to enter data and render data',
    'myJsonTokens':myTokens['access_token']})

# writing a custom view to handle form input and display at the same time
# example from https://www.digitalocean.com/community/tutorials/how-to-build-a-weather-app-in-django

#example date pattern -- 
# startDate = "2022-05-01T12:00:00Z"

def meetingFormView(request):
    # print('1->',request.POST)
    # print('2->',request.POST.mycity)
    if request.method=='POST':
        print('here')
        print('1->',request.POST)
        startDate = request.POST['startDate']
        endDate = request.POST['endDate']
        print('2->',request.POST['startDate'])
        print('3->',request.POST['endDate'])
        result = {
            'message' : "getting meetings between {} and {}".format( ''.join([str(startDate),'T12:00:00Z']), ''.join([str(endDate),'T12:00:00Z']))
        }
        print('4-> result : ',result)
        return render(request, 'getdata/meetingList.html',result) #returns the index.html template

    return render(request, 'getdata/MeetingForm.html') #returns the index.html template