在阅读并更新 Wagtail changelog 中所述的可能的重大更改后，在查看任何页面的任何编辑菜单时，我收到以下错误：
'BlockWidget' object has no attribute '_block_json'
Request Method: GET
Request URL: https://example.com/admin/pages/530/edit/
Django Version: 3.2.9
Exception Type: AttributeError
Exception Value:
'BlockWidget' object has no attribute '_block_json'
Exception Location: /home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages/wagtail/blocks/base.py, line 526, in block_json
Python Executable: /home/user/.virtualenvs_dev/mysite/bin/python3.10
Python Version: 3.10.9
Python Path:
['/home/user/projects/mysite/django',
'/home/user/.virtualenvs_dev/mysite/bin',
'/usr/local/lib/python310.zip',
'/usr/local/lib/python3.10',
'/usr/local/lib/python3.10/lib-dynload',
'/home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages',
'/home/user/projects/mysite/django/mysite']
Server time: Tue, 17 Oct 2023 11:02:12 -0500
Error during template rendering
In template /home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages/wagtail/admin/templates/wagtailadmin/panels/object_list.html, error at line 9
'BlockWidget' object has no attribute '_block_json'
1 {% load wagtailadmin_tags %}
2
3 <div class="w-form-width">
4 {% if self.help_text %}
5 {% help_block status="info" %}{{ self.help_text }}{% endhelp_block %}
6 {% endif %}
7 {% for child, identifier in self.visible_children_with_identifiers %}
8 {% panel id_prefix=self.prefix id=identifier classname=child.classes|join:' ' heading=child.heading heading_size="label" icon=child.icon id_for_label=child.id_for_label is_required=child.is_required %}
9 {% component child %}
10 {% endpanel %}
11 {% endfor %}
12 </div>
13
完整的堆栈跟踪如下：
Environment:
Request Method: GET
Request URL: https://example.com/admin/pages/530/edit/
Django Version: 3.2.9
Python Version: 3.10.9
Installed Applications:
['six',
'formtools',
'django_otp',
'django_otp.plugins.otp_static',
'django_otp.plugins.otp_totp',
'two_factor',
'apps.content_blocks',
'apps.pages.home',
'apps.pages.utility',
'apps.pages.search',
'apps.pages.blank_slate',
'apps.rates',
'apps.utils',
'apps.pages.puput',
'wagtail.contrib.sitemaps',
'wagtail.contrib.routable_page',
'apps.wagtailstreamforms',
'crispy_forms',
'apps.wagtail_admin_extension',
'wagtail.contrib.forms',
'wagtail.contrib.redirects',
'wagtail.embeds',
'wagtail.sites',
'wagtail.users',
'wagtail.snippets',
'wagtail.documents',
'wagtail.images',
'wagtail.contrib.search_promotions',
'wagtail.search',
'wagtail.admin',
'wagtail',
'apps.pages.group_testimonials',
'apps.pages.emergency_notifications',
'apps.pages.promotions_carousel',
'apps.pages.locations',
'wagtail.contrib.modeladmin',
'wagtailmenus',
'wagtail.contrib.table_block',
'wagtail.contrib.styleguide',
'modelcluster',
'taggit',
'django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'user_sessions',
'django.contrib.messages',
'django.contrib.staticfiles',
'django.contrib.humanize',
'sekizai',
'django.contrib.sites',
'django.contrib.sitemaps',
'rest_framework',
'wagtailmetadata',
'wagtail.api.v2',
'tinymce',
'wagtail.contrib.frontend_cache',
'gunicorn']
Installed Middleware:
['user_sessions.middleware.SessionMiddleware',
'django.middleware.common.CommonMiddleware',
'django.middleware.csrf.CsrfViewMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware',
'django_otp.middleware.OTPMiddleware',
'django.contrib.messages.middleware.MessageMiddleware',
'django.contrib.sessions.middleware.SessionMiddleware',
'django.middleware.clickjacking.XFrameOptionsMiddleware',
'django.middleware.security.SecurityMiddleware',
'wagtail.contrib.redirects.middleware.RedirectMiddleware',
'django.middleware.security.SecurityMiddleware',
'whitenoise.middleware.WhiteNoiseMiddleware',
'x_forwarded_for.middleware.XForwardedForMiddleware']
Template error:
In template /home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages/wagtail/admin/templates/wagtailadmin/panels/object_list.html, error at line 9
'BlockWidget' object has no attribute '_block_json'
1 : {% load wagtailadmin_tags %}
2 :
3 : <div class="w-form-width">
4 : {% if self.help_text %}
5 : {% help_block status="info" %}{{ self.help_text }}{% endhelp_block %}
6 : {% endif %}
7 : {% for child, identifier in self.visible_children_with_identifiers %}
8 : {% panel id_prefix=self.prefix id=identifier classname=child.classes|join:' ' heading=child.heading heading_size="label" icon=child.icon id_for_label=child.id_for_label is_required=child.is_required %}
9 : {% component child %}
10 : {% endpanel %}
11 : {% endfor %}
12 : </div>
13 :
Traceback (most recent call last):
File "/home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages/django/core/handlers/exception.py", line 47, in inner
response = get_response(request)
File "/home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages/django/core/handlers/base.py", line 204, in _get_response
response = response.render()
File "/home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages/wagtail/admin/auth.py", line 197, in overridden_render
return render()
File "/home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages/django/template/response.py", line 105, in render
self.content = self.rendered_content
File "/home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages/django/template/response.py", line 83, in rendered_content
return template.render(context, self._request)
File "/home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages/django/template/backends/django.py", line 61, in render
return self.template.render(context)
File "/home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages/django/template/base.py", line 170, in render
return self._render(context)
File "/home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages/django/test/utils.py", line 100, in instrumented_test_render
return self.nodelist.render(context)
File "/home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages/django/template/base.py", line 938, in render
bit = node.render_annotated(context)
File "/home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages/django/template/base.py", line 905, in render_annotated
return self.render(context)
File "/home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages/django/template/loader_tags.py", line 150, in render
return compiled_parent._render(context)
File "/home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages/django/test/utils.py", line 100, in instrumented_test_render
return self.nodelist.render(context)
File "/home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages/django/template/base.py", line 938, in render
bit = node.render_annotated(context)
File "/home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages/django/template/base.py", line 905, in render_annotated
return self.render(context)
File "/home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages/django/template/loader_tags.py", line 150, in render
return compiled_parent._render(context)
File "/home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages/django/test/utils.py", line 100, in instrumented_test_render
return self.nodelist.render(context)
File "/home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages/django/template/base.py", line 938, in render
bit = node.render_annotated(context)
File "/home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages/django/template/base.py", line 905, in render_annotated
return self.render(context)
File "/home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages/django/template/loader_tags.py", line 150, in render
return compiled_parent._render(context)
File "/home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages/django/test/utils.py", line 100, in instrumented_test_render
return self.nodelist.render(context)
File "/home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages/django/template/base.py", line 938, in render
bit = node.render_annotated(context)
File "/home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages/django/template/base.py", line 905, in render_annotated
return self.render(context)
File "/home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages/django/template/loader_tags.py", line 150, in render
return compiled_parent._render(context)
File "/home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages/django/test/utils.py", line 100, in instrumented_test_render
return self.nodelist.render(context)
File "/home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages/django/template/base.py", line 938, in render
bit = node.render_annotated(context)
File "/home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages/django/template/base.py", line 905, in render_annotated
return self.render(context)
File "/home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages/django/template/loader_tags.py", line 62, in render
result = block.nodelist.render(context)
File "/home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages/django/template/base.py", line 938, in render
bit = node.render_annotated(context)
File "/home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages/django/template/base.py", line 905, in render_annotated
return self.render(context)
File "/home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages/django/template/loader_tags.py", line 62, in render
result = block.nodelist.render(context)
File "/home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages/django/template/base.py", line 938, in render
bit = node.render_annotated(context)
File "/home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages/django/template/base.py", line 905, in render_annotated
return self.render(context)
File "/home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages/django/template/loader_tags.py", line 62, in render
result = block.nodelist.render(context)
File "/home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages/django/template/base.py", line 938, in render
bit = node.render_annotated(context)
File "/home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages/django/template/base.py", line 905, in render_annotated
return self.render(context)
File "/home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages/django/template/base.py", line 988, in render
output = self.filter_expression.resolve(context)
File "/home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages/django/template/base.py", line 671, in resolve
obj = self.var.resolve(context)
File "/home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages/django/template/base.py", line 796, in resolve
value = self._resolve_lookup(context)
File "/home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages/django/template/base.py", line 858, in _resolve_lookup
current = current()
File "/home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages/wagtail/admin/panels.py", line 405, in render_form_content
return mark_safe(self.render_html() + self.render_missing_fields())
File "/home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages/wagtail/admin/ui/components.py", line 20, in render_html
return template.render(context_data)
File "/home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages/django/template/backends/django.py", line 61, in render
return self.template.render(context)
File "/home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages/django/template/base.py", line 170, in render
return self._render(context)
File "/home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages/django/test/utils.py", line 100, in instrumented_test_render
return self.nodelist.render(context)
File "/home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages/django/template/base.py", line 938, in render
bit = node.render_annotated(context)
File "/home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages/django/template/base.py", line 905, in render_annotated
return self.render(context)
File "/home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages/django/template/defaulttags.py", line 211, in render
nodelist.append(node.render_annotated(context))
File "/home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages/django/template/base.py", line 905, in render_annotated
return self.render(context)
File "/home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages/django/template/defaulttags.py", line 312, in render
return nodelist.render(context)
File "/home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages/django/template/base.py", line 938, in render
bit = node.render_annotated(context)
File "/home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages/django/template/base.py", line 905, in render_annotated
return self.render(context)
File "/home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages/django/template/base.py", line 988, in render
output = self.filter_expression.resolve(context)
File "/home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages/django/template/base.py", line 671, in resolve
obj = self.var.resolve(context)
File "/home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages/django/template/base.py", line 796, in resolve
value = self._resolve_lookup(context)
File "/home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages/django/template/base.py", line 858, in _resolve_lookup
current = current()
File "/home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages/wagtail/admin/ui/components.py", line 20, in render_html
return template.render(context_data)
File "/home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages/django/template/backends/django.py", line 61, in render
return self.template.render(context)
File "/home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages/django/template/base.py", line 170, in render
return self._render(context)
File "/home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages/django/test/utils.py", line 100, in instrumented_test_render
return self.nodelist.render(context)
File "/home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages/django/template/base.py", line 938, in render
bit = node.render_annotated(context)
File "/home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages/django/template/base.py", line 905, in render_annotated
return self.render(context)
File "/home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages/django/template/defaulttags.py", line 211, in render
nodelist.append(node.render_annotated(context))
File "/home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages/django/template/base.py", line 905, in render_annotated
return self.render(context)
File "/home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages/wagtail/admin/templatetags/wagtailadmin_tags.py", line 995, in render
children = self.nodelist.render(context) if self.nodelist else ""
File "/home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages/django/template/base.py", line 938, in render
bit = node.render_annotated(context)
File "/home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages/django/template/base.py", line 905, in render_annotated
return self.render(context)
File "/home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages/django/template/library.py", line 192, in render
output = self.func(*resolved_args, **resolved_kwargs)
File "/home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages/wagtail/admin/templatetags/wagtailadmin_tags.py", line 923, in component
return obj.render_html(context)
File "/home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages/wagtail/admin/ui/components.py", line 15, in render_html
context_data = self.get_context_data(parent_context)
File "/home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages/wagtail/admin/panels.py", line 842, in get_context_data
rendered_field = self.bound_field.as_widget(attrs=widget_attrs)
File "/home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages/django/forms/boundfield.py", line 93, in as_widget
return widget.render(
File "/home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages/wagtail/blocks/base.py", line 554, in render
return self.render_with_errors(
File "/home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages/wagtail/blocks/base.py", line 548, in render_with_errors
block_json=self.block_json,
File "/home/user/.virtualenvs_dev/mysite/lib/python3.10/site-packages/wagtail/blocks/base.py", line 525, in block_json
return self._block_json
Exception Type: AttributeError at /admin/pages/530/edit/
Exception Value: 'BlockWidget' object has no attribute '_block_json'
我使用了 python 诗歌来尝试让所有库兼容。它构建得很好并且网站运行。正是该网站的这个特定部分与实际的 Wagtail 软件包有关，一直失败。知道可能出了什么问题吗？
我使用的库/版本是：
Babel="2.9.1"
backcall="0.2.0"
bcrypt="3.2.0"
beautifulsoup4="4.9.3"
bleach="4.1.0"
boto3="1.19.11"
botocore="1.22.11"
certifi="2019.11.28"
cffi="1.15.1"
chardet="4.0.0"
click="8.0.3"
cryptography="3.3.2"
decorator="4.4.2"
Django="3.2.9"
django-appconf="1.0.5"
django-bakery="0.12.7"
django-classy-tags="2.0.0"
django-compressor="2.4.1"
django-crispy-forms="1.13.0"
django-debug-toolbar="3.2.2"
django-el-pagination="3.3.0"
django-environ="0.8.1"
django-extensions="3.1.3"
django-filter="2.4.0"
django-formtools="2.2"
django-model-utils="4.2.0"
django-modelcluster="6.1"
django-multi-email-field="0.6.2"
django-otp="1.1.1"
django-phonenumber-field="5.2.0"
django-recaptcha="2.0.6"
django-redis="5.0.0"
django-redis-cache="3.0.0"
django-sekizai="2.0.0"
django-taggit="3.1.0"
django-tinymce4-lite="1.8.0"
django-treebeard="4.5.1"
django-two-factor-auth="1.13.1"
django-user-sessions="1.7.1"
django-xforwardedfor-middleware="2.0"
djangorestframework="3.12.4"
docutils="0.17.1"
draftjs-exporter="2.1.7"
ecdsa="0.17.0"
elasticsearch="7.15.1"
entrypoints="0.3"
Fabric3="1.14.post1"
fastnumbers="3.2.1"
gevent="21.8.0"
greenlet="1.1.2"
gunicorn="20.1.0"
html5lib="1.1"
idna="3.3"
imagesize="1.3.0"
ipdb="0.13.9"
ipykernel="5.5.6"
ipyparallel="6.3.0"
ipython="7.17.0"
ipython-genutils="0.2.0"
ipywidgets="7.6.5"
jedi="0.18.0"
Jinja2="3.0.2"
jmespath="0.10.0"
jsmin="3.0.0"
jsonschema="3.2.0"
jupyter-client="7.0.6"
jupyter-core="4.9.1"
l18n="2020.6.1"
Markdown="2.6.11"
MarkupSafe="2.0.1"
mistune="0.8.4"
mock="4.0.3"
nbconvert="6.0.7"
nbformat="5.1.3"
nose="1.3.7"
notebook="6.4.5"
olefile="0.46"
pandocfilters="1.5.0"
paramiko="2.8.0"
parso="0.8.2"
pbr="5.7.0"
pexpect="4.8.0"
phonenumberslite="8.12.36"
pickleshare="0.7.5"
Pillow="8.4.0"
prompt-toolkit="3.0.22"
psycopg2="2.8.6"
ptyprocess="0.7.0"
pyasn1="0.4.8"
pycparser="2.20"
pycrypto="2.6.1"
Pygments="2.10.0"
PyNaCl="1.4.0"
python-dateutil="2.8.2"
python-dotenv="0.19.1"
pytz="2023.3"
PyYAML="6.0"
pyzmq="22.3.0"
qrcode="6.1"
qtconsole="5.1.1"
rcssmin="1.0.6"
redis="3.5.3"
requests="2.26.0"
rjsmin="1.1.0"
s3transfer="0.5.0"
simplegeneric="0.8.1"
six="1.16.0"
snowballstemmer="2.1.0"
Sphinx="4.2.0"
sphinxcontrib-websupport="1.2.4"
sqlparse="0.4.2"
terminado="0.12.1"
testpath="0.5.0"
tornado="6.1"
traitlets="4.3.3"
Unidecode="1.3.2"
urllib3="1.26.7"
virtualenv="15.1.0"
wagtail="4.1"
wagtail-metadata="4.0.2"
wagtailmenus="3.1.9"
wcwidth="0.2.5"
webencodings="0.5.1"
whitenoise="5.3.0"
widgetsnbextension="3.5.2"
Willow="1.4"
此错误似乎与 wagtailstreamforms 中报告的错误相匹配：https://github.com/labd/wagtailstreamforms/issues/200
您的包中没有列出 wagtailstreamforms，但它列在 INSTALLED_APPS 中，因此大概它包含在您的项目的代码库中。这需要升级到3.22或更高版本。