无法将图像上载到Django管理员

from django import forms
from django.conf import settings
from qcloud_cos import CosConfig
from qcloud_cos import CosS3Client

# 定义表单
class ImageUploadForm(forms.Form):
    image = forms.ImageField()

# 视图函数
def upload_image(request):
    if request.method == 'POST':
        form = ImageUploadForm(request.POST, request.FILES)
        if form.is_valid():
            # 保存图像到COS
            image = form.cleaned_data['image']
            cos_config = CosConfig(Region=settings.COS_REGION, SecretId=settings.COS_SECRET_ID, SecretKey=settings.COS_SECRET_KEY)
            cos_client = CosS3Client(cos_config)
            response = cos_client.put_object(
                Bucket=settings.COS_BUCKET,
                Body=image.read(),
                Key=image.name,
                ContentType=image.content_type
            )
            # 获取图像的URL
            image_url = cos_client.get_presigned_download_url(
                Bucket=settings.COS_BUCKET,
                Key=image.name,
                Expired=3600
            )
            # 在这里可以将图像URL保存到数据库或进行其他操作
            return HttpResponse(f'Image uploaded successfully. URL: {image_url}')
    else:
        form = ImageUploadForm()
    return render(request, 'upload_image.html', {'form': form})