Hello Guys while i am installing Report Extended(report_extended) module in odoo 8 i got an error

Traceback (most recent call last): File "/opt/openerp/odoo/openerp/http.py", line 499, in _handle_exception return super(JsonRequest, self)._handle_exception(exception) File "/opt/openerp/odoo/openerp/http.py", line 516, in dispatch result = self._call_function(**self.params) File "/opt/openerp/odoo/openerp/http.py", line 282, in _call_function return checked_call(self.db, *args, **kwargs) File "/opt/openerp/odoo/openerp/service/model.py", line 113, in wrapper return f(dbname, *args, **kwargs) File "/opt/openerp/odoo/openerp/http.py", line 279, in checked_call return self.endpoint(*a, **kw) File "/opt/openerp/odoo/openerp/http.py", line 732, in __call__ return self.method(*args, **kw) File "/opt/openerp/odoo/openerp/http.py", line 375, in response_wrap response = f(*args, **kw) File "/opt/openerp/odoo/openerp/addons/web/controllers/main.py", line 948, in call_button action = self._call_kw(model, method, args, {}) File "/opt/openerp/odoo/openerp/addons/web/controllers/main.py", line 936, in _call_kw return getattr(request.registry.get(model), method)(request.cr, request.uid, *args, **kwargs) File "/opt/openerp/odoo/openerp/api.py", line 237, in wrapper return old_api(self, *args, **kwargs) File "/opt/openerp/odoo/openerp/addons/base/module/module.py", line 450, in button_immediate_install return self._button_immediate_function(cr, uid, ids, self.button_install, context=context) File "/opt/openerp/odoo/openerp/api.py", line 237, in wrapper return old_api(self, *args, **kwargs) File "/opt/openerp/odoo/openerp/addons/base/module/module.py", line 497, in _button_immediate_function registry = openerp.modules.registry.RegistryManager.new(cr.dbname, update_module=True) File "/opt/openerp/odoo/openerp/modules/registry.py", line 324, in new openerp.modules.load_modules(registry._db, force_demo, status, update_module) File "/opt/openerp/odoo/openerp/modules/loading.py", line 358, in load_modules loaded_modules, update_module) File "/opt/openerp/odoo/openerp/modules/loading.py", line 263, in load_marked_modules loaded, processed = load_module_graph(cr, graph, progressdict, report=report, skip_modules=loaded_modules, perform_checks=perform_checks) File "/opt/openerp/odoo/openerp/modules/loading.py", line 149, in load_module_graph load_openerp_module(package.name) File "/opt/openerp/odoo/openerp/modules/module.py", line 312, in load_openerp_module __import__('openerp.addons.' + module_name) File "/opt/openerp/odoo/openerp/modules/module.py", line 76, in load_module f, path, descr = imp.find_module(module_part, ad_paths) ImportError: No module named report_extended