After Upgrading version 8 to 9.1 getting error

Hi all,

Today I upgraded to version 8 to version 9 and ran bench migrate but throwing below error.

Please help me in this.

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/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/local/lib/python2.7/site-packages/click/core.py", line 722, in __call__
    return self.main(*args, **kwargs)
  File "/home/frappe/frappe-bench/env/local/lib/python2.7/site-packages/click/core.py", line 697, in main
    rv = self.invoke(ctx)
  File "/home/frappe/frappe-bench/env/local/lib/python2.7/site-packages/click/core.py", line 1066, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/home/frappe/frappe-bench/env/local/lib/python2.7/site-packages/click/core.py", line 1066, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/home/frappe/frappe-bench/env/local/lib/python2.7/site-packages/click/core.py", line 895, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/home/frappe/frappe-bench/env/local/lib/python2.7/site-packages/click/core.py", line 535, in invoke
    return callback(*args, **kwargs)
  File "/home/frappe/frappe-bench/env/local/lib/python2.7/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 24, in _func
    ret = f(frappe._dict(ctx.obj), *args, **kwargs)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/commands/site.py", line 217, in migrate
    migrate(context.verbose, rebuild_website=rebuild_website)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/migrate.py", line 35, in migrate
    sync_fixtures()
  File "/home/frappe/frappe-bench/apps/frappe/frappe/utils/fixtures.py", line 24, in sync_fixtures
    ignore_links=True, overwrite=True)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/core/page/data_import_tool/data_import_tool.py", line 95, in import_doc
    frappe.modules.import_file.import_file_by_path(f, data_import=True, force=True, pre_process=pre_process, reset_permissions=True)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/modules/import_file.py", line 58, in import_file_by_path
    ignore_version=ignore_version, reset_permissions=reset_permissions)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/modules/import_file.py", line 131, in import_doc
    doc.insert()
  File "/home/frappe/frappe-bench/apps/frappe/frappe/model/document.py", line 218, in insert
    self.run_before_save_methods()
  File "/home/frappe/frappe-bench/apps/frappe/frappe/model/document.py", line 809, in run_before_save_methods
    self.run_method("validate")
  File "/home/frappe/frappe-bench/apps/frappe/frappe/model/document.py", line 702, in run_method
    out = Document.hook(fn)(self, *args, **kwargs)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/model/document.py", line 924, in composer
    return composed(self, method, *args, **kwargs)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/model/document.py", line 907, in runner
    add_to_return_value(self, fn(self, *args, **kwargs))
  File "/home/frappe/frappe-bench/apps/frappe/frappe/model/document.py", line 696, in <lambda>
    fn = lambda self, *args, **kwargs: getattr(self, method)(*args, **kwargs)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/custom/doctype/custom_field/custom_field.py", line 48, in validate
    check_if_fieldname_conflicts_with_methods(self.dt, self.fieldname)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/core/doctype/doctype/doctype.py", line 800, in check_if_fieldname_conflicts_with_methods
    doc = frappe.get_doc({"doctype": doctype})
  File "/home/frappe/frappe-bench/apps/frappe/frappe/__init__.py", line 622, in get_doc
    return frappe.model.document.get_doc(*args, **kwargs)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/model/document.py", line 68, in get_doc
    return controller(*args, **kwargs)
TypeError: __init__() got an unexpected keyword argument 'doctype'

Sorry, Did the upgrade from 8 to 9 complete before you ran bench migrate? What does bench version report?