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No module named navbar settings

Hello!
Trying a
bench update

but I get
ModuleNotFoundError: No module named ‘frappe.core.doctype.navbar_settings’

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/lib/python3.7/runpy.py", line 193, in _run_module_as_main
    "__main__", mod_spec)
  File "/usr/lib/python3.7/runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/utils/bench_helper.py", line 99, 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/python3.7/site-packages/click/core.py", line 764, in __call__
    return self.main(*args, **kwargs)
  File "/home/frappe/frappe-bench/env/lib/python3.7/site-packages/click/core.py", line 717, in main
    rv = self.invoke(ctx)
  File "/home/frappe/frappe-bench/env/lib/python3.7/site-packages/click/core.py", line 1137, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/home/frappe/frappe-bench/env/lib/python3.7/site-packages/click/core.py", line 1137, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/home/frappe/frappe-bench/env/lib/python3.7/site-packages/click/core.py", line 956, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/home/frappe/frappe-bench/env/lib/python3.7/site-packages/click/core.py", line 555, in invoke
    return callback(*args, **kwargs)
  File "/home/frappe/frappe-bench/env/lib/python3.7/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 26, in _func
    ret = f(frappe._dict(ctx.obj), *args, **kwargs)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/commands/site.py", line 287, in migrate
    migrate(context.verbose, rebuild_website=rebuild_website, skip_failing=skip_failing)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/migrate.py", line 48, in migrate
    frappe.modules.patch_handler.run_all(skip_failing)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/modules/patch_handler.py", line 41, in run_all
    run_patch(patch)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/modules/patch_handler.py", line 30, in run_patch
    if not run_single(patchmodule = patch):
  File "/home/frappe/frappe-bench/apps/frappe/frappe/modules/patch_handler.py", line 71, in run_single
    return execute_patch(patchmodule, method, methodargs)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/modules/patch_handler.py", line 91, in execute_patch
    frappe.get_attr(patchmodule.split()[0] + ".execute")()
  File "/home/frappe/frappe-bench/apps/erpnext/erpnext/patches/v13_0/add_standard_navbar_items.py", line 7, in execute
    add_standard_navbar_items()
  File "/home/frappe/frappe-bench/apps/erpnext/erpnext/setup/install.py", line 121, in add_standard_navbar_items
    navbar_settings = frappe.get_single("Navbar Settings")
  File "/home/frappe/frappe-bench/apps/frappe/frappe/__init__.py", line 773, in get_single
    return get_doc(doctype, doctype)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/__init__.py", line 753, in get_doc
    doc = frappe.model.document.get_doc(*args, **kwargs)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/model/document.py", line 69, in get_doc
    controller = get_controller(doctype)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/model/base_document.py", line 48, in get_controller
    module = load_doctype_module(doctype, module_name)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/modules/utils.py", line 206, in load_doctype_module
    raise ImportError('Module import failed for {0} ({1})'.format(doctype, module_name + ' Error: ' + str(e)))
ImportError: Module import failed for Navbar Settings (frappe.core.doctype.navbar_settings.navbar_settings Error: No module named 'frappe.core.doctype.navbar_settings')

How can I solve this?
Any troubleshooting tips are greatly welcome too :slight_smile:

Your app erpnext is on develop branch, switch it to version-12 using

cd apps/erpnext
git fetch upstream version-12:version-12
git checkout version-12
cd …/…
bench update