下面是traceback错误。安装odoo9要求时出现错误。请帮助我修复错误
Traceback（最近的呼叫最后一次）：文件"/home/p7assest/physio_tatva/env/lib/python2.7/site-packages/werkzeug/www.example.com "，line 177，in run_wsgi execute（www.example.com）文件"/home/p7assest/physio_tatva/env/lib/python2.7/site-packages/werkzeug/www.example.com"，line 165，in execute application_iter = app（environ，start_response）文件"/home/p7assest/physio_tatva/odoo9/openerp/service/www.example.com "，line 247，serving.py行1489，在callreturn www.example.com（environ，start_wrapped）File "/home/p7assest/physio_tatva/env/lib/python2.7/site-packages/werkzeug/www.example.com "，行588，在callreturn www.example.com（environ，start_response）File "/home/p7assest/physio_tatva/odoo9/openerp/www.example.com"，行1671，在dispatch ir_http = request中。注册表['ir. http'] File "/home/p7assest/physio_tatva/odoo9/openerp/http.py "，line 376，in registry return openerp.模块。登记处。注册管理员。get（self.db）if self.db else None File "/home/p7assest/physio_tatva/odoo9/openerp/modules/self.server.app www.example.com”，第331行，在load_openerp_moduleimport（'openerp.addons.'+ module_name）File "/home/p7assest/physio_tatva/odoo9/openerp/modules/module.py "，line 61，in load_module mod = imp. load_module（'openerp.addons.'+ module_part，f，path，descr）File "/home/p7assest/physio_tatva/physio-tattva/addons/receipt_voucher_report/init. py"，line 22，in import account_payment File "/home/p7assest/physio_tatva/physio-tattva/addons/receipt_voucher_report/account_payment. py "，第32行，在从www.example.com导入ImportError：serving.py