Employee Appraisal template

When i select Appraisal Template, it give error:
Traceback (most recent call last):
File “/home/kinzang/erp/apps/frappe/frappe/app.py”, line 55, in application
response = frappe.handler.handle()
File “/home/kinzang/erp/apps/frappe/frappe/handler.py”, line 19, in handle
execute_cmd(cmd)
File “/home/kinzang/erp/apps/frappe/frappe/handler.py”, line 30, in execute_cmd
method = get_attr(cmd)
File “/home/kinzang/erp/apps/frappe/frappe/handler.py”, line 114, in get_attr
method = frappe.get_attr(cmd)
File “/home/kinzang/erp/apps/frappe/frappe/init.py”, line 859, in get_attr
return getattr(get_module(modulename), methodname)
AttributeError: ‘module’ object has no attribute ‘fetch_appraisal_template’

any one have idea…
thanks in advance