Unable to view my app icon

Hi I have install a new app along with the existing apps erpnext and frappe using the same site, but unable to see my app icon. Following is the error i encounter

Traceback (most recent call last):
File “/Users/ayush/ErpDev/frappe-bench/apps/frappe/frappe/app.py”, line 55, in application
response = frappe.handler.handle()
File “/Users/ayush/ErpDev/frappe-bench/apps/frappe/frappe/handler.py”, line 19, in handle
File “/Users/ayush/ErpDev/frappe-bench/apps/frappe/frappe/handler.py”, line 36, in execute_cmd
ret = frappe.call(method, **frappe.form_dict)
File “/Users/ayush/ErpDev/frappe-bench/apps/frappe/frappe/init.py”, line 890, in call
return fn(*args, **newargs)
TypeError: get() takes exactly 1 argument (0 given)

check your show or hide module, or module access in your user list.
you got that error because you dont have permission to see app icon.
be carefull show or hide module for “everyone”