插件安装卸载后，无法打开登陆页

500: Internal Server Error
错误信息:

Error to render compiling AST
TypeError: object of type 'NoneType' has no len()
Template: web.login
Path: /t/t/t
Node: <t t-set="form_small" t-value="True" t-if="len(providers) &gt; 2"/>
            
当渲染模板时出错 web.login 以及评估表达式： <t t-set="form_small" t-value="True" t-if="len(providers) &gt; 2"/>

Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/odoo/addons/base/models/ir_http.py", line 237, in _dispatch
    result = request.dispatch()
  File "/usr/lib/python3/dist-packages/odoo/http.py", line 806, in dispatch
    r = self._call_function(**self.params)
  File "/usr/lib/python3/dist-packages/odoo/http.py", line 359, in _call_function
    return checked_call(self.db, *args, **kwargs)
  File "/usr/lib/python3/dist-packages/odoo/service/model.py", line 94, in wrapper
    return f(dbname, *args, **kwargs)
  File "/usr/lib/python3/dist-packages/odoo/http.py", line 350, in checked_call
    result.flatten()
  File "/usr/lib/python3/dist-packages/odoo/http.py", line 1242, in flatten
    self.response.append(self.render())
  File "/usr/lib/python3/dist-packages/odoo/http.py", line 1235, in render
    return env["ir.ui.view"]._render_template(self.template, self.qcontext)
  File "/usr/lib/python3/dist-packages/odoo/addons/base/models/ir_ui_view.py", line 1709, in _render_template
    return self.browse(self.get_view_id(template))._render(values, engine)
  File "/usr/lib/python3/dist-packages/odoo/addons/website/models/ir_ui_view.py", line 411, in _render
    return super(View, self)._render(values, engine=engine, minimal_qcontext=minimal_qcontext)
  File "/usr/lib/python3/dist-packages/odoo/addons/web_editor/models/ir_ui_view.py", line 28, in _render
    return super(IrUiView, self)._render(values=values, engine=engine, minimal_qcontext=minimal_qcontext)
  File "/usr/lib/python3/dist-packages/odoo/addons/base/models/ir_ui_view.py", line 1717, in _render
    return self.env[engine]._render(self.id, qcontext)
  File "/usr/lib/python3/dist-packages/odoo/addons/base/models/ir_qweb.py", line 55, in _render
    result = super(IrQWeb, self)._render(id_or_xml_id, values=values, **context)
  File "/usr/lib/python3/dist-packages/odoo/addons/base/models/qweb.py", line 258, in _render
    self.compile(template, options)(self, body.append, values or {})
  File "/usr/lib/python3/dist-packages/odoo/addons/base/models/qweb.py", line 338, in _compiled_fn
    raise QWebException("Error to render compiling AST", e, path, node and etree.tostring(node[0], encoding='unicode'), name)
Exception

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/odoo/addons/base/models/ir_http.py", line 237, in _dispatch
    result = request.dispatch()
  File "/usr/lib/python3/dist-packages/odoo/http.py", line 806, in dispatch
    r = self._call_function(**self.params)
  File "/usr/lib/python3/dist-packages/odoo/http.py", line 359, in _call_function
    return checked_call(self.db, *args, **kwargs)
  File "/usr/lib/python3/dist-packages/odoo/service/model.py", line 94, in wrapper
    return f(dbname, *args, **kwargs)
  File "/usr/lib/python3/dist-packages/odoo/http.py", line 350, in checked_call
    result.flatten()
  File "/usr/lib/python3/dist-packages/odoo/http.py", line 1242, in flatten
    self.response.append(self.render())
  File "/usr/lib/python3/dist-packages/odoo/http.py", line 1235, in render
    return env["ir.ui.view"]._render_template(self.template, self.qcontext)
  File "/usr/lib/python3/dist-packages/odoo/addons/base/models/ir_ui_view.py", line 1709, in _render_template
    return self.browse(self.get_view_id(template))._render(values, engine)
  File "/usr/lib/python3/dist-packages/odoo/addons/website/models/ir_ui_view.py", line 411, in _render
    return super(View, self)._render(values, engine=engine, minimal_qcontext=minimal_qcontext)
  File "/usr/lib/python3/dist-packages/odoo/addons/web_editor/models/ir_ui_view.py", line 28, in _render
    return super(IrUiView, self)._render(values=values, engine=engine, minimal_qcontext=minimal_qcontext)
  File "/usr/lib/python3/dist-packages/odoo/addons/base/models/ir_ui_view.py", line 1717, in _render
    return self.env[engine]._render(self.id, qcontext)
  File "/usr/lib/python3/dist-packages/odoo/addons/base/models/ir_qweb.py", line 55, in _render
    result = super(IrQWeb, self)._render(id_or_xml_id, values=values, **context)
  File "/usr/lib/python3/dist-packages/odoo/addons/base/models/qweb.py", line 258, in _render
    self.compile(template, options)(self, body.append, values or {})
  File "/usr/lib/python3/dist-packages/odoo/addons/base/models/qweb.py", line 338, in _compiled_fn
    raise QWebException("Error to render compiling AST", e, path, node and etree.tostring(node[0], encoding='unicode'), name)
odoo.addons.base.models.qweb.QWebException: object of type 'NoneType' has no len()
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/odoo/addons/base/models/qweb.py", line 331, in _compiled_fn
    return compiled(self, append, new, options, log)
  File "<template>", line 1, in template_web_login_335
  File "<template>", line 2, in body_call_content_333
TypeError: object of type 'NoneType' has no len()

Error to render compiling AST
TypeError: object of type 'NoneType' has no len()
Template: web.login
Path: /t/t/t
Node: <t t-set="form_small" t-value="True" t-if="len(providers) &gt; 2"/>

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伊思特科技/whcat+wecom for odoo .gitee-modal { width: 500px !important; }

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