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Error : TypeError: a bytes-like object is required, not 'list' after Bench Update

python3

#1

Hi all,
Was recently setup the development environment with this guide. After run bench update today, after run bench start, and when access to the site, it show the following error :

TypeError: a bytes-like object is required, not ‘list’

After some checking, I guess is because of python 2.7 is default version of my machine, but when I check the /frappe-bench/env/lib, the python version is 3.5, not sure this is the cause, kindly help to advise further how to solve this, thanks.


#2

anyone have any idea on this ? appreciate the help.


#3

@alan
Send whole trackback so we can understand exact error.


#4
frappe@ubuntu:~/frappe-bench$ bench clear-cache
Traceback (most recent call last):
  File "/usr/lib/python3.5/runpy.py", line 184, in _run_module_as_main
    "__main__", mod_spec)
  File "/usr/lib/python3.5/runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/utils/bench_helper.py", line 94, in <module>
    main()
  File "/home/frappe/frappe-bench/apps/frappe/frappe/utils/bench_helper.py", line 18, in main
    click.Group(commands=commands)(prog_name='bench')
  File "/home/frappe/frappe-bench/env/lib/python3.5/site-packages/click/core.py", line 722, in __call__
    return self.main(*args, **kwargs)
  File "/home/frappe/frappe-bench/env/lib/python3.5/site-packages/click/core.py", line 697, in main
    rv = self.invoke(ctx)
  File "/home/frappe/frappe-bench/env/lib/python3.5/site-packages/click/core.py", line 1066, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/home/frappe/frappe-bench/env/lib/python3.5/site-packages/click/core.py", line 1066, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/home/frappe/frappe-bench/env/lib/python3.5/site-packages/click/core.py", line 895, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/home/frappe/frappe-bench/env/lib/python3.5/site-packages/click/core.py", line 535, in invoke
    return callback(*args, **kwargs)
  File "/home/frappe/frappe-bench/env/lib/python3.5/site-packages/click/decorators.py", line 17, in new_func
    return f(get_current_context(), *args, **kwargs)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/commands/__init__.py", line 24, in _func
    ret = f(frappe._dict(ctx.obj), *args, **kwargs)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/commands/utils.py", line 41, in clear_cache
    frappe.clear_cache()
  File "/home/frappe/frappe-bench/apps/frappe/frappe/__init__.py", line 510, in clear_cache
    frappe.sessions.clear_cache()
  File "/home/frappe/frappe-bench/apps/frappe/frappe/sessions.py", line 50, in clear_cache
    clear_notifications(user)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/desk/notifications.py", line 163, in clear_notifications
    config = get_notification_config()
  File "/home/frappe/frappe-bench/apps/frappe/frappe/desk/notifications.py", line 220, in get_notification_config
    return frappe.cache().get_value("notification_config", _get)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/utils/redis_wrapper.py", line 72, in get_value
    val = generator()
  File "/home/frappe/frappe-bench/apps/frappe/frappe/desk/notifications.py", line 214, in _get
    nc = frappe.get_attr(notification_config)()
  File "/home/frappe/frappe-bench/apps/erpnext/erpnext/startup/notifications.py", line 77, in get_notification_config
    fields= ["name"], filters = {"name": ("not in", doctype), 'is_submittable': 1}):
  File "/home/frappe/frappe-bench/apps/frappe/frappe/__init__.py", line 1177, in get_all
    return get_list(doctype, *args, **kwargs)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/__init__.py", line 1150, in get_list
    return frappe.model.db_query.DatabaseQuery(doctype).execute(None, *args, **kwargs)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/model/db_query.py", line 88, in execute
    result = self.build_and_run()
  File "/home/frappe/frappe-bench/apps/frappe/frappe/model/db_query.py", line 100, in build_and_run
    args = self.prepare_args()
  File "/home/frappe/frappe-bench/apps/frappe/frappe/model/db_query.py", line 119, in prepare_args
    self.build_conditions()
  File "/home/frappe/frappe-bench/apps/frappe/frappe/model/db_query.py", line 279, in build_conditions
    self.build_filter_conditions(self.filters, self.conditions)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/model/db_query.py", line 300, in build_filter_conditions
    conditions.append(self.prepare_filter_condition(f))
  File "/home/frappe/frappe-bench/apps/frappe/frappe/model/db_query.py", line 330, in prepare_filter_condition
    value = '("{0}")'.format('", "'.join(value))
  File "/home/frappe/frappe-bench/apps/frappe/frappe/model/db_query.py", line 329, in <genexpr>
    value = (frappe.db.escape((v or '').strip(), percent=False) for v in values)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/database.py", line 904, in escape
    s = text_type(pymysql.escape_string(s), "utf-8").replace("`", "\\`")
  File "/home/frappe/frappe-bench/env/lib/python3.5/site-packages/pymysql/converters.py", line 73, in _escape_unicode
    return value.translate(_escape_table)
TypeError: a bytes-like object is required, not 'list'

#5

I just downloaded the erpnext virtual machine of 2018-03-31 from https://erpnext.org/get-started.

I updated to latest version:

ERPNext 10.1.40
Frappé 10.1.37

I have the same error.

Does anyone know how to fix it?

Thanks in advanced


#6

Same Error


#7

same error here too :frowning:


#8

Same error!


#9

Perhaps the change to python 3.5 from 2.7 has left your system in a confused state?

So try ‘bench update’ a couple more times.

If that does not help try this:

frappe-bench > cd apps/frappe
frappe-bench/apps/frappe > find . -name "*.pyc" -exec rm -f {} \;

Basically, all the .pyc needs to be rebuild because of changes in lots of core files.

As per here Switch branches in V11 [ cannot import name Database issue]

If that does not help then report the problem https://github.com/frappe/erpnext/issues