ValueError: unsupported pickle protocol: 3

1

Hello,

I am facing the issue “Internal Server Error”.

When I checked the web.error.log it throws the error “ValueError: unsupported pickle protocol: 3”.

The site goes down and automatically gets up live again after some time span.

I think this is due to python libraries which are getting mismatched, because on the same server i am having setup which contains python 3.5 libraries which never goes down.

Kindly advice.

2

To pinpoint the problem please post the full traceback plus erpnext version info thanks!

“The pickle module implements binary protocols for serializing and de-serializing a Python object structure.”

3

@clarkej This is happeing for both the version “erpnext 10.1.36, frappe 10.1.35” also " erpnext 11.1.49,
frappe 11.1.44 ".

this is the same traceback for the both above version setups and both the setup uses python 2.7 libraries.

File "~/frappe-bench/env/local/lib/python2.7/site-packages/gunicorn/workers/sync.py", line 135, in handle
    self.handle_request(listener, req, client, addr)
  File "~/frappe-bench/env/local/lib/python2.7/site-packages/gunicorn/workers/sync.py", line 176, in handle_request
    respiter = self.wsgi(environ, resp.start_response)
  File "~/frappe-bench/env/local/lib/python2.7/site-packages/werkzeug/local.py", line 231, in application
    return ClosingIterator(app(environ, start_response), self.cleanup)
  File "~/frappe-bench/env/local/lib/python2.7/site-packages/werkzeug/wrappers/base_request.py", line 237, in application
    resp = f(*args[:-2] + (request,))
  File "~/frappe-bench/apps/frappe/frappe/app.py", line 87, in application
    response = handle_exception(e)
  File "~/frappe-bench/apps/frappe/frappe/app.py", line 193, in handle_exception
    http_status_code=http_status_code)
  File "~/frappe-bench/apps/frappe/frappe/website/render.py", line 39, in render
    data = render_page('404')
  File "~/frappe-bench/apps/frappe/frappe/website/render.py", line 158, in render_page
    return build(path)
  File "~/frappe-bench/apps/frappe/frappe/website/render.py", line 165, in build
    return build_page(path)
  File "~/frappe-bench/apps/frappe/frappe/website/render.py", line 178, in build_page
    context = get_context(path)
  File "~/frappe-bench/apps/frappe/frappe/website/context.py", line 28, in get_context
    context = build_context(context)
  File "~/frappe-bench/apps/frappe/frappe/website/context.py", line 75, in build_context
    context.update(get_website_settings())
  File "~/frappe-bench/apps/frappe/frappe/website/doctype/website_settings/website_settings.py", line 76, in get_website_settings
    {"label": _("My Account"), "url": "/me"},
  File "~/frappe-bench/apps/frappe/frappe/__init__.py", line 71, in _
    return get_full_dict(lang).get(msg) or non_translated_msg
  File "~/frappe-bench/apps/frappe/frappe/translate.py", line 190, in get_full_dict
    frappe.local.lang_full_dict = load_lang(lang)
  File "~/frappe-bench/apps/frappe/frappe/translate.py", line 211, in load_lang
    out = frappe.cache().hget("lang_full_dict", lang, shared=True)
  File "~/frappe-bench/apps/frappe/frappe/utils/redis_wrapper.py", line 177, in hget
    value = pickle.loads(value)
ValueError: unsupported pickle protocol: 3
4

Have you tried switching to Python 3.6?

Reference ValueError: unsupported pickle protocol: 3, python2 pickle can not load the file dumped by python 3 pickle? - Stack Overflow

5

You probably running 2 different setups at a time.
Try closing one setup and run bench clear-cache.
Hope this will work. It worked for me.

1 Like