Cannot print invoices after install mobile_timesheet_attendance

[rothirschtec]

Can you help me with this?

result = self._render_tag[t_render](self, element, template_attributes, generated_attributes, qwebcontext)

File "/opt/odoo-filesystem/odoo/openerp/addons/base/ir/ir_qweb.py", line 447, in render_tag_call
return self.render(cr, uid, template, d)
File "/opt/odoo-filesystem/odoo/openerp/api.py", line 268, in wrapper
return old_api(self, *args, **kwargs)
File "/opt/odoo-filesystem/odoo/openerp/addons/base/ir/ir_qweb.py", line 263, in render
return self.render_node(self.get_template(id_or_xml_id, qwebcontext), qwebcontext)
File "/opt/odoo-filesystem/odoo/openerp/addons/base/ir/ir_qweb.py", line 192, in get_template
xml_doc = qwebcontext.loader(name)
File "/opt/odoo-filesystem/odoo/openerp/addons/base/ir/ir_ui_view.py", line 1022, in loader
return self.read_template(cr, uid, name, context=context)
File "/opt/odoo-filesystem/odoo/openerp/api.py", line 268, in wrapper
return old_api(self, *args, **kwargs)
File "", line 2, in read_template
File "/opt/odoo-filesystem/odoo/openerp/tools/cache.py", line 122, in lookup
value = d[key] = self.method(*args, **kwargs)
File "/opt/odoo-filesystem/odoo/openerp/addons/base/ir/ir_ui_view.py", line 854, in read_template
arch = self.read_combined(cr, uid, view_id, fields=['arch'], context=context)['arch']
File "/opt/odoo-filesystem/odoo/openerp/api.py", line 268, in wrapper
return old_api(self, *args, **kwargs)
File "/opt/odoo-filesystem/odoo/openerp/addons/base/ir/ir_ui_view.py", line 540, in read_combined
cr, uid, arch_tree, view_arch, parent_view['id'], context=context)
File "/opt/odoo-filesystem/odoo/openerp/api.py", line 268, in wrapper
return old_api(self, *args, **kwargs)
File "/opt/odoo-filesystem/odoo/openerp/addons/base/ir/ir_ui_view.py", line 477, in apply_inheritance_specs
self.raise_view_error(cr, uid, _("Element '%s' cannot be located in parent view") % tag, inherit_id, context=context)
File "/opt/odoo-filesystem/odoo/openerp/api.py", line 268, in wrapper
return old_api(self, *args, **kwargs)
File "/opt/odoo-filesystem/odoo/openerp/addons/base/ir/ir_ui_view.py", line 362, in raise_view_error
raise AttributeError(message)
QWebException: Element '' cannot be located in parent view

Error context:
View Main layout
[view_id: 1272, xml_id: website.layout, model: n/a, parent_id: n/a]