500: Internal Server Error

QWeb

Error message:

Error to render compiling AST
AttributeError: 'NoneType' object has no attribute 'id'
Template: website_sale.option_collapse_categories_recursive
Path: /t/li/a
Node: <a t-att-href="keep('/shop/category/' + slug(c), category=0)" t-attf-class="nav-link #{'active' if c.id == category.id else ''}" t-field="c.name"/>
            

The error occured while rendering the template website_sale.option_collapse_categories_recursive and evaluating the following expression: <a t-att-href="keep('/shop/category/' + slug(c), category=0)" t-attf-class="nav-link #{'active' if c.id == category.id else ''}" t-field="c.name"/>

Traceback

Traceback (most recent call last):
  File "/home/odoo/src/odoo/odoo/addons/base/models/ir_http.py", line 237, in _dispatch
    result = request.dispatch()
  File "/home/odoo/src/odoo/odoo/http.py", line 813, in dispatch
    r = self._call_function(**self.params)
  File "/home/odoo/src/odoo/odoo/http.py", line 370, in _call_function
    return checked_call(self.db, *args, **kwargs)
  File "/home/odoo/src/odoo/odoo/service/model.py", line 94, in wrapper
    return f(dbname, *args, **kwargs)
  File "/home/odoo/src/odoo/odoo/http.py", line 361, in checked_call
    result.flatten()
  File "/home/odoo/src/odoo/odoo/http.py", line 1282, in flatten
    self.response.append(self.render())
  File "/home/odoo/src/odoo/odoo/http.py", line 1275, in render
    return env["ir.ui.view"]._render_template(self.template, self.qcontext)
  File "/home/odoo/src/odoo/odoo/addons/base/models/ir_ui_view.py", line 1727, in _render_template
    return self.browse(self.get_view_id(template))._render(values, engine)
  File "/home/odoo/src/odoo/addons/website/models/ir_ui_view.py", line 423, in _render
    return super(View, self)._render(values, engine=engine, minimal_qcontext=minimal_qcontext)
  File "/home/odoo/src/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 "/home/odoo/src/odoo/odoo/addons/base/models/ir_ui_view.py", line 1735, in _render
    return self.env[engine]._render(self.id, qcontext)
  File "/home/odoo/src/enterprise/web_studio/models/ir_qweb.py", line 44, in _render
    return super(IrQWeb, self)._render(template, values=values, **options)
  File "/home/odoo/src/odoo/odoo/addons/base/models/ir_qweb.py", line 55, in _render
    result = super(IrQWeb, self)._render(id_or_xml_id, values=values, **context)
  File "/home/odoo/src/odoo/odoo/addons/base/models/qweb.py", line 254, in _render
    self.compile(template, options)(self, body.append, values or {})
  File "/home/odoo/src/odoo/odoo/addons/base/models/qweb.py", line 331, in _compiled_fn
    raise e
  File "/home/odoo/src/odoo/odoo/addons/base/models/qweb.py", line 329, in _compiled_fn
    return compiled(self, append, new, options, log)
  File "<template>", line 1, in template_website_sale_products_12196
  File "<template>", line 2, in body_call_content_12194
  File "<template>", line 21, in foreach_12149
  File "/home/odoo/src/odoo/odoo/addons/base/models/qweb.py", line 336, 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 "/home/odoo/src/odoo/odoo/addons/base/models/ir_http.py", line 237, in _dispatch
    result = request.dispatch()
  File "/home/odoo/src/odoo/odoo/http.py", line 813, in dispatch
    r = self._call_function(**self.params)
  File "/home/odoo/src/odoo/odoo/http.py", line 370, in _call_function
    return checked_call(self.db, *args, **kwargs)
  File "/home/odoo/src/odoo/odoo/service/model.py", line 94, in wrapper
    return f(dbname, *args, **kwargs)
  File "/home/odoo/src/odoo/odoo/http.py", line 361, in checked_call
    result.flatten()
  File "/home/odoo/src/odoo/odoo/http.py", line 1282, in flatten
    self.response.append(self.render())
  File "/home/odoo/src/odoo/odoo/http.py", line 1275, in render
    return env["ir.ui.view"]._render_template(self.template, self.qcontext)
  File "/home/odoo/src/odoo/odoo/addons/base/models/ir_ui_view.py", line 1727, in _render_template
    return self.browse(self.get_view_id(template))._render(values, engine)
  File "/home/odoo/src/odoo/addons/website/models/ir_ui_view.py", line 423, in _render
    return super(View, self)._render(values, engine=engine, minimal_qcontext=minimal_qcontext)
  File "/home/odoo/src/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 "/home/odoo/src/odoo/odoo/addons/base/models/ir_ui_view.py", line 1735, in _render
    return self.env[engine]._render(self.id, qcontext)
  File "/home/odoo/src/enterprise/web_studio/models/ir_qweb.py", line 44, in _render
    return super(IrQWeb, self)._render(template, values=values, **options)
  File "/home/odoo/src/odoo/odoo/addons/base/models/ir_qweb.py", line 55, in _render
    result = super(IrQWeb, self)._render(id_or_xml_id, values=values, **context)
  File "/home/odoo/src/odoo/odoo/addons/base/models/qweb.py", line 254, in _render
    self.compile(template, options)(self, body.append, values or {})
  File "/home/odoo/src/odoo/odoo/addons/base/models/qweb.py", line 331, in _compiled_fn
    raise e
  File "/home/odoo/src/odoo/odoo/addons/base/models/qweb.py", line 329, in _compiled_fn
    return compiled(self, append, new, options, log)
  File "<template>", line 1, in template_website_sale_products_12196
  File "<template>", line 2, in body_call_content_12194
  File "<template>", line 21, in foreach_12149
  File "/home/odoo/src/odoo/odoo/addons/base/models/qweb.py", line 336, 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: 'NoneType' object has no attribute 'id'
Traceback (most recent call last):
  File "/home/odoo/src/odoo/odoo/addons/base/models/qweb.py", line 329, in _compiled_fn
    return compiled(self, append, new, options, log)
  File "<template>", line 1, in template_website_sale_option_collapse_categories_recursive_12203
AttributeError: 'NoneType' object has no attribute 'id'

Error to render compiling AST
AttributeError: 'NoneType' object has no attribute 'id'
Template: website_sale.option_collapse_categories_recursive
Path: /t/li/a
Node: <a t-att-href="keep('/shop/category/' + slug(c), category=0)" t-attf-class="nav-link #{'active' if c.id == category.id else ''}" t-field="c.name"/>