Migrate site to v11 and html5lib error - object has no attribute '_base'

[sharpec]

Error as a title
When migrate my site to V11 staging, receive this error

Traceback (most recent call last):
  File "/usr/lib64/python2.7/runpy.py", line 151, in _run_module_as_main
    mod_name, loader, code, fname = _get_module_details(mod_name)
  File "/usr/lib64/python2.7/runpy.py", line 101, in _get_module_details
    loader = get_loader(mod_name)
  File "/usr/lib64/python2.7/pkgutil.py", line 464, in get_loader
    return find_loader(fullname)
  File "/usr/lib64/python2.7/pkgutil.py", line 474, in find_loader
    for importer in iter_importers(fullname):
  File "/usr/lib64/python2.7/pkgutil.py", line 430, in iter_importers
    __import__(pkg)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/__init__.py", line 18, in <module>
    from .utils.jinja import (get_jenv, get_template, render_template, get_email_from_template, get_jloader)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/utils/__init__.py", line 9, in <module>
    from .html_utils import sanitize_html
  File "/home/frappe/frappe-bench/apps/frappe/frappe/utils/html_utils.py", line 5, in <module>
    from bs4 import BeautifulSoup
  File "/home/frappe/frappe-bench/env/lib/python2.7/site-packages/bs4/__init__.py", line 30, in <module>
    from .builder import builder_registry, ParserRejectedMarkup
  File "/home/frappe/frappe-bench/env/lib/python2.7/site-packages/bs4/builder/__init__.py", line 314, in <module>
    from . import _html5lib
  File "/home/frappe/frappe-bench/env/lib/python2.7/site-packages/bs4/builder/_html5lib.py", line 70, in <module>
    class TreeBuilderForHtml5lib(html5lib.treebuilders._base.TreeBuilder):
AttributeError: 'module' object has no attribute '_base'

after many pip installation, html5lib downgrade, i have find this https://patchwork.openembedded.org/patch/134417/

and i have removed underscore from _base in
/home/frappe/frappe-bench/env/lib/python2.7/site-packages/bs4/builder/_html5lib.py

bench --site all migrate work

is it correct?

[ci2016]

I had to do the same. Thank you for sharing the solution. However, I wish to know what that means and if its done correctly.

[sharpec]

@ci2016

However, I wish to know what that means and if its done correctly.

I dont know, I asked for confirmation too.

This morning, taking advantage of Sunday, I’m updating the instance in production version 10, and I found the same problem. I also see various posts on the community with the same problem.

Error during update to 10.1.66

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Bench update error with this week update

Hello all I can no more acces to my erpnext after an do an bench update with the following error really dont know how to fix this issue, is already more than one year I update n the same way this VM witout problem. thx in advance for your help Traceback (most recent call last): File “/usr/lib/python2.7/runpy.py”, line 162, in _run_module_as_main “main”, fname, loader, pkg_name) File “/usr/lib/python2.7/runpy.py”, line 72, in _run_code exec code in run_globals File “/home/clyde/frappe-b…

[sharpec]

on version 10 dosent work…many error when try login

i have created an issue on github
https://github.com/frappe/erpnext/issues/15900

[Jigar_Tarpara]

Some how i fix this error by replacing _base by base (remove _)
This may fix your issue

[munim]

In which file, you have changed?

[Jigar_Tarpara]

@sharpec

/home/frappe/frappe-bench/env/lib/python2.7/site-packages/bs4/builder/_html5lib.p

in this file
/home/frappe/frappe-bench/env/lib/python2.7/site-packages/bs4/builder/_html5lib.p