Custom app installation throwingerror

ERPNext
1

Hi Team,

I am using frappe developer solution using doc →

issue reproducible steps →

setting up bench
creating site
installing erpnext and other app
Installing custom app (app installation is going fine without any error)
=> However in migration and on browser I am getting below error :

upon troubleshooting I have below observations :

  1. list-apps is not showing my custom app
  2. from bench console get installed apps not returning my custom app which installed successfully.

In [16]: print(frappe.get_installed_apps())
[‘frappe’, ‘erpnext’, ‘crm’]

on database "select * from tabInstalled Application ; showing only two entries frappe and erpnext

in function add_to_installed_apps during app installation below lines don’t raise any exception for my custom app :

frappe.db.set_global(“installed_apps”, json.dumps(installed_apps))
frappe.db.commit()

#########################################################

frappe.get_single(“Installed Applications”).update_versions()
File “/workspace/frappe-bench/apps/frappe/frappe/core/doctype/installed_applications/installed_applications.py”, line 30, in update_versions
for app in frappe.utils.get_installed_apps_info():
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File “/workspace/frappe-bench/apps/frappe/frappe/utils/init.py”, line 774, in get_installed_apps_info
for app, version_details in get_versions().items()
^^^^^^^^^^^^^^
File “/workspace/frappe-bench/apps/frappe/frappe/utils/typing_validations.py”, line 31, in wrapper
return func(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^
File “/workspace/frappe-bench/apps/frappe/frappe/utils/change_log.py”, line 116, in get_versions
“title”: app_hooks.get(“app_title”)[0],

TypeError: ‘NoneType’ object is not subscriptable

#########################################################

Any help or guidance will be really helpfull thanks :slight_smile:
2

Check if apps.txt has your custom app name in it… else add it there… it happens to me, sometimes apps.txt is not updated on installing custom app

3

app name is there : (nextcore)

frappe@57bee5534b4c:/workspace/frappe-bench/sites$ cat apps.txt
frappe
payments
test_app
crm
hrms
erpnext
nextcore

but its not showing in table : -

select app_name from tabInstalled Application ;
±---------+
| app_name |
±---------+
| frappe |
| helpdesk |
| erpnext |
| hrms |
| payments |
| crm |
±---------+
6 rows in set (0.000 sec)

getting below error on browser →

image
image2068×1594 301 KB

4

You can use my script to properly spin up a development container in minutes

5

@Yamen_Zakhour

Thanks for your help !!

But we already done so much for our current setup, Still wants to try little more before give up on it :slight_smile:

any suggestions what could be wrong in our case ?

6

I have no idea, I use the same development setup for all my clients and projects and have never faced that issue

7

can we use it on mac /window both ?

8

All you need is docker with vscode docker extension