这个问题通常是由于文件表单字段没有正确设置为multipart/form-data引起的。以下是一个示例表单集和视图函数，可以将它们作为参考来解决上传图片时遇到的问题：

forms.py：

from django import forms

class ImageUploadForm(forms.Form):
    picture = forms.ImageField()

views.py：

from django.forms import formset_factory
from django.http import HttpResponse
from django.shortcuts import render

from .forms import ImageUploadForm


def multiple_image_upload(request):
    ImageUploadFormSet = formset_factory(ImageUploadForm, extra=3)

    if request.method == 'POST':
        formset = ImageUploadFormSet(request.POST, request.FILES)
        if formset.is_valid():
            for form in formset:
                picture = form.cleaned_data.get('picture')
                # 处理上传的图片
            return HttpResponse('图片上传成功！')
    else:
        formset = ImageUploadFormSet()

    return render(request, 'multiple_image_upload.html', {'formset': formset})

在模板文件中，确保在表单标签中添加enctype="multipart/form-data"属性，如下所示：

{% extends 'base.html' %}

{% block content %}
  

    {% csrf_token %}
    {{ formset.as_p }}
    上传图片
  
{% endblock %}