我把我的项目上传到linux环境后，解压之后，配置数据库及其app为
host=‘0.0.0.0’，port=5005
之后运行起来了，可是点击到自定义的model 就是各种报错，报错内容都是一样的；可是在我的个人window环境却完全没有问题，这是环境哪里有问题吗？

File "/root/app/esayblog/apps/templates/admin/lib.html", line 190, in template
    {{ render_field(form, f, kwargs) }}
  File "/root/.pyenv/versions/3.6.1/lib/python3.6/site-packages/jinja2/runtime.py", line 579, in _invoke
    rv = self._func(*arguments)
  File "/root/app/esayblog/apps/templates/admin/lib.html", line 121, in template
    {% if field(**kwargs) is not none %}{% set testlabel = field(**kwargs) %}
  File "/root/.pyenv/versions/3.6.1/lib/python3.6/site-packages/wtforms/fields/core.py", line 153, in __call__
    return self.meta.render_field(self, kwargs)
  File "/root/.pyenv/versions/3.6.1/lib/python3.6/site-packages/wtforms/meta.py", line 56, in render_field
    return field.widget(field, **render_kw)
  File "/root/.pyenv/versions/3.6.1/lib/python3.6/site-packages/flask_admin/form/widgets.py", line 28, in __call__
    return super(Select2Widget, self).__call__(field, **kwargs)
  File "/root/.pyenv/versions/3.6.1/lib/python3.6/site-packages/wtforms/widgets/core.py", line 287, in __call__
    for val, label, selected in field.iter_choices():
  File "/root/.pyenv/versions/3.6.1/lib/python3.6/site-packages/flask_admin/contrib/sqla/fields.py", line 168, in iter_choices
    for pk, obj in self._get_object_list():
  File "/root/.pyenv/versions/3.6.1/lib/python3.6/site-packages/flask_admin/contrib/sqla/fields.py", line 102, in _get_object_list
    self._object_list = [(text_type(get_pk(obj)), obj) for obj in query]
  File "/root/.pyenv/versions/3.6.1/lib/python3.6/site-packages/flask_admin/contrib/sqla/fields.py", line 102, in <listcomp>
    self._object_list = [(text_type(get_pk(obj)), obj) for obj in query]
  File "/root/.pyenv/versions/3.6.1/lib/python3.6/site-packages/flask_admin/contrib/sqla/fields.py", line 299, in get_pk_from_identity
    cls, key = identity_key(instance=obj)
ValueError: too many values to unpack (expected 2)