i am studying about frappe, and i have created apps in frappe, but when i push to github and my teams clone that app, and in different host / laptop, when creating new document Packages in my app Module, there has an error
can anyone help me 
this is link of the app Nyuuk - Tripwe Frappe Learn
App Versions
{
"frappe": "16.0.0-dev",
"tripwe_app": "0.0.1"
}
Route
Form/Packages/new-packages-nntqnzndea
Traceback
Traceback (most recent call last):
File "apps/frappe/frappe/email/doctype/notification/notification.py", line 502, in evaluate_alert
alert.send(doc)
File "apps/frappe/frappe/email/doctype/notification/notification.py", line 179, in send
self.load_standard_properties(context)
File "apps/frappe/frappe/email/doctype/notification/notification.py", line 430, in load_standard_properties
module = get_doc_module(self.module, self.doctype, self.name)
File "apps/frappe/frappe/modules/utils.py", line 50, in get_doc_module
return frappe.get_module(module_name)
File "apps/frappe/frappe/__init__.py", line 1506, in get_module
return importlib.import_module(modulename)
File "/usr/lib/python3.10/importlib/__init__.py", line 126, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 1050, in _gcd_import
File "<frozen importlib._bootstrap>", line 1027, in _find_and_load
File "<frozen importlib._bootstrap>", line 992, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 241, in _call_with_frames_removed
File "<frozen importlib._bootstrap>", line 1050, in _gcd_import
File "<frozen importlib._bootstrap>", line 1027, in _find_and_load
File "<frozen importlib._bootstrap>", line 992, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 241, in _call_with_frames_removed
File "<frozen importlib._bootstrap>", line 1050, in _gcd_import
File "<frozen importlib._bootstrap>", line 1027, in _find_and_load
File "<frozen importlib._bootstrap>", line 992, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 241, in _call_with_frames_removed
File "<frozen importlib._bootstrap>", line 1050, in _gcd_import
File "<frozen importlib._bootstrap>", line 1027, in _find_and_load
File "<frozen importlib._bootstrap>", line 1004, in _find_and_load_unlocked
ModuleNotFoundError: No module named 'tripwe_app.tripwe.notification.package_{{doc'
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "apps/frappe/frappe/app.py", line 110, in application
response = frappe.api.handle(request)
File "apps/frappe/frappe/api/__init__.py", line 49, in handle
data = endpoint(**arguments)
File "apps/frappe/frappe/api/v1.py", line 36, in handle_rpc_call
return frappe.handler.handle()
File "apps/frappe/frappe/handler.py", line 49, in handle
data = execute_cmd(cmd)
File "apps/frappe/frappe/handler.py", line 85, in execute_cmd
return frappe.call(method, **frappe.form_dict)
File "apps/frappe/frappe/__init__.py", line 1784, in call
return fn(*args, **newargs)
File "apps/frappe/frappe/utils/typing_validations.py", line 31, in wrapper
return func(*args, **kwargs)
File "apps/frappe/frappe/desk/form/save.py", line 39, in savedocs
doc.save()
File "apps/frappe/frappe/model/document.py", line 335, in save
return self._save(*args, **kwargs)
File "apps/frappe/frappe/model/document.py", line 357, in _save
return self.insert()
File "apps/frappe/frappe/model/document.py", line 306, in insert
self.run_method("after_insert")
File "apps/frappe/frappe/model/document.py", line 961, in run_method
self.run_notifications(method)
File "apps/frappe/frappe/model/document.py", line 1021, in run_notifications
_evaluate_alert(alert)
File "apps/frappe/frappe/model/document.py", line 1004, in _evaluate_alert
evaluate_alert(self, alert.name, alert.event)
File "apps/frappe/frappe/email/doctype/notification/notification.py", line 512, in evaluate_alert
msg = f"<details><summary>{title}</summary>{message}</details>"
UnboundLocalError: local variable 'message' referenced before assignment
Request Data
{
"type": "POST",
"args": {
"doc": "{\"docstatus\":0,\"doctype\":\"Packages\",\"name\":\"new-packages-nntqnzndea\",\"__islocal\":1,\"__unsaved\":1,\"owner\":\"Administrator\",\"categories\":[{\"docstatus\":0,\"doctype\":\"Categories\",\"name\":\"new-categories-cppzkefuto\",\"__islocal\":1,\"__unsaved\":1,\"owner\":\"Administrator\",\"parent\":\"new-packages-nntqnzndea\",\"parentfield\":\"categories\",\"parenttype\":\"Packages\",\"idx\":1,\"category_name\":\"Category\"}],\"package_name\":\"Teting\",\"travel_agent\":\"Agent\",\"desc\":\"Desc\",\"duration\":259200,\"prce\":1000000,\"location\":\"2313f5febe\",\"maps\":\"{\\\"type\\\":\\\"FeatureCollection\\\",\\\"features\\\":[{\\\"type\\\":\\\"Feature\\\",\\\"properties\\\":{},\\\"geometry\\\":{\\\"type\\\":\\\"Point\\\",\\\"coordinates\\\":[73.009386,19.062247]}}]}\",\"preview\":\"/private/files/IMG_20221231_113558.jpg\"}",
"action": "Save"
},
"freeze": true,
"headers": {},
"error_handlers": {},
"url": "/api/method/frappe.desk.form.save.savedocs",
"request_id": null
}
Response Data
{
"exception": "UnboundLocalError: local variable 'message' referenced before assignment",
"exc_type": "UnboundLocalError"
}
{
"exception": "UnboundLocalError: cannot access local variable 'message' where it is not associated with a value",
"exc_type": "UnboundLocalError",
"exc": "[\"Traceback (most recent call last):\\n File \\\"apps/frappe/frappe/email/doctype/notification/notification.py\\\", line 489, in evaluate_alert\\n alert.send(doc)\\n File \\\"apps/frappe/frappe/email/doctype/notification/notification.py\\\", line 166, in send\\n self.load_standard_properties(context)\\n File \\\"apps/frappe/frappe/email/doctype/notification/notification.py\\\", line 417, in load_standard_properties\\n module = get_doc_module(self.module, self.doctype, self.name)\\n ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\\n File \\\"apps/frappe/frappe/modules/utils.py\\\", line 50, in get_doc_module\\n return frappe.get_module(module_name)\\n ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\\n File \\\"apps/frappe/frappe/__init__.py\\\", line 1504, in get_module\\n return importlib.import_module(modulename)\\n ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\\n File \\\"/home/frappe/.pyenv/versions/3.11.6/lib/python3.11/importlib/__init__.py\\\", line 126, in import_module\\n return _bootstrap._gcd_import(name[level:], package, level)\\n ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\\n File \\\"<frozen importlib._bootstrap>\\\", line 1204, in _gcd_import\\n File \\\"<frozen importlib._bootstrap>\\\", line 1176, in _find_and_load\\n File \\\"<frozen importlib._bootstrap>\\\", line 1126, in _find_and_load_unlocked\\n File \\\"<frozen importlib._bootstrap>\\\", line 241, in _call_with_frames_removed\\n File \\\"<frozen importlib._bootstrap>\\\", line 1204, in _gcd_import\\n File \\\"<frozen importlib._bootstrap>\\\", line 1176, in _find_and_load\\n File \\\"<frozen importlib._bootstrap>\\\", line 1126, in _find_and_load_unlocked\\n File \\\"<frozen importlib._bootstrap>\\\", line 241, in _call_with_frames_removed\\n File \\\"<frozen importlib._bootstrap>\\\", line 1204, in _gcd_import\\n File \\\"<frozen importlib._bootstrap>\\\", line 1176, in _find_and_load\\n File \\\"<frozen importlib._bootstrap>\\\", line 1126, in _find_and_load_unlocked\\n File \\\"<frozen importlib._bootstrap>\\\", line 241, in _call_with_frames_removed\\n File \\\"<frozen importlib._bootstrap>\\\", line 1204, in _gcd_import\\n File \\\"<frozen importlib._bootstrap>\\\", line 1176, in _find_and_load\\n File \\\"<frozen importlib._bootstrap>\\\", line 1140, in _find_and_load_unlocked\\nModuleNotFoundError: No module named 'tripwe_app.tripwe.notification.package_{{doc'\\n\\nDuring handling of the above exception, another exception occurred:\\n\\nTraceback (most recent call last):\\n File \\\"apps/frappe/frappe/app.py\\\", line 110, in application\\n response = frappe.api.handle(request)\\n ^^^^^^^^^^^^^^^^^^^^^^^^^^\\n File \\\"apps/frappe/frappe/api/__init__.py\\\", line 49, in handle\\n data = endpoint(**arguments)\\n ^^^^^^^^^^^^^^^^^^^^^\\n File \\\"apps/frappe/frappe/api/v1.py\\\", line 42, in create_doc\\n return frappe.new_doc(doctype, **data).insert()\\n ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\\n File \\\"apps/frappe/frappe/model/document.py\\\", line 306, in insert\\n self.run_method(\\\"after_insert\\\")\\n File \\\"apps/frappe/frappe/model/document.py\\\", line 961, in run_method\\n self.run_notifications(method)\\n File \\\"apps/frappe/frappe/model/document.py\\\", line 1021, in run_notifications\\n _evaluate_alert(alert)\\n File \\\"apps/frappe/frappe/model/document.py\\\", line 1004, in _evaluate_alert\\n evaluate_alert(self, alert.name, alert.event)\\n File \\\"apps/frappe/frappe/email/doctype/notification/notification.py\\\", line 499, in evaluate_alert\\n msg = f\\\"<details><summary>{title}</summary>{message}</details>\\\"\\n ^^^^^^^\\nUnboundLocalError: cannot access local variable 'message' where it is not associated with a value\\n\"]"
}