Odoo 15 - Open HRMS not working with Code Backend Theme

[t0rnstr1ng]

Hello there,

after installing Code Backend Theme I get WSOD with following error:

2022-10-27 07:01:37,053 1 ERROR odootest werkzeug: Error on request:
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 810, 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 348, in checked_call
result = self.endpoint(*a, **kw)
File "/usr/lib/python3/dist-packages/odoo/http.py", line 916, in call
return self.method(*args, **kw)
File "/usr/lib/python3/dist-packages/odoo/http.py", line 535, in response_wrap
response = f(*args, **kw)
File "/usr/lib/python3/dist-packages/odoo/addons/web/controllers/main.py", line 946, in qweb
content = HomeStaticTemplateHelpers.get_qweb_templates(mods, db, debug=request.session.debug, bundle=bundle)
File "/usr/lib/python3/dist-packages/odoo/addons/web/controllers/main.py", line 575, in get_qweb_templates
return cls(addons, db, debug=debug)._get_qweb_templates(bundle)[0]
File "/usr/lib/python3/dist-packages/odoo/addons/web/controllers/main.py", line 566, in _get_qweb_templates
content, checksum = self._concat_xml(xml_paths)
File "/usr/lib/python3/dist-packages/odoo/addons/web/controllers/main.py", line 536, in _concat_xml
xml = self._compute_xml_tree(addon, fname, contents)
File "/usr/lib/python3/dist-packages/odoo/addons/web/controllers/main.py", line 466, in _compute_xml_tree
inherited_template = apply_inheritance_specs(parent_tree, xpaths)
File "/usr/lib/python3/dist-packages/odoo/tools/template_inheritance.py", line 254, in apply_inheritance_specs
raise ValueError(
Exception

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

Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/werkzeug/serving.py", line 323, in run_wsgi
execute(self.server.app)
File "/usr/lib/python3/dist-packages/werkzeug/serving.py", line 312, in execute
application_iter = app(environ, start_response)
File "/usr/lib/python3/dist-packages/odoo/service/server.py", line 482, in app
return self.app(e, s)
File "/usr/lib/python3/dist-packages/odoo/service/wsgi_server.py", line 112, in application
return application_unproxied(environ, start_response)
File "/usr/lib/python3/dist-packages/odoo/service/wsgi_server.py", line 87, in application_unproxied
result = odoo.http.root(environ, start_response)
File "/usr/lib/python3/dist-packages/odoo/http.py", line 1336, in call
return self.dispatch(environ, start_response)
File "/usr/lib/python3/dist-packages/odoo/http.py", line 1302, in call
return self.app(environ, start_wrapped)
File "/usr/lib/python3/dist-packages/werkzeug/middleware/shared_data.py", line 260, in call
return self.app(environ, start_response)
File "/usr/lib/python3/dist-packages/odoo/http.py", line 1531, in dispatch
result = ir_http._dispatch()
File "/usr/lib/python3/dist-packages/odoo/addons/utm/models/ir_http.py", line 29, in _dispatch
response = super(IrHttp, cls)._dispatch()
File "/usr/lib/python3/dist-packages/odoo/addons/http_routing/models/ir_http.py", line 519, in _dispatch
result = super(IrHttp, cls)._dispatch()
File "/usr/lib/python3/dist-packages/odoo/addons/auth_signup/models/ir_http.py", line 19, in _dispatch
return super(Http, cls)._dispatch()
File "/usr/lib/python3/dist-packages/odoo/addons/web_editor/models/ir_http.py", line 21, in _dispatch
return super(IrHttp, cls)._dispatch()
File "/usr/lib/python3/dist-packages/odoo/addons/base/models/ir_http.py", line 241, in _dispatch
return cls._handle_exception(e)
File "/usr/lib/python3/dist-packages/odoo/addons/utm/models/ir_http.py", line 34, in _handle_exception
response = super(IrHttp, cls)._handle_exception(exc)
File "/usr/lib/python3/dist-packages/odoo/addons/http_routing/models/ir_http.py", line 620, in _handle_exception
return super(IrHttp, cls)._handle_exception(exception)
File "/usr/lib/python3/dist-packages/odoo/addons/base/models/ir_http.py", line 209, in _handle_exception
return request._handle_exception(exception)
File "/usr/lib/python3/dist-packages/odoo/http.py", line 748, in _handle_exception
return super(HttpRequest, self)._handle_exception(exception)
File "/usr/lib/python3/dist-packages/odoo/http.py", line 301, in _handle_exception
raise exception.with_traceback(None) from new_cause
ValueError: Element '' cannot be located in parent view - - -

Could you please take a look at this issue?

Thanks.