Restore fail

Trying to restore a v15 erpnext into a new bench with v16 apps, set up with pilot:

The old bench lives in docker and has these apps:
ERPNext: v15.43.1
Frappe Framework: v15.48.0
Raven: v1.7.1

The new bench has these apps:
Frappe 16.32.0
ERPNext 16.30.0
Wiki 3.0.0
Blog 0.0.1
Builder 1.32.0
Ecommerce Integrations 1.17.0
ERPNext Shipping 16.0.0
Gameplan 0.0.1
Offsite Backups 0.0.1
Raven 2.8.12

The restore went through like this:
```
$ pilot frappe --site bv-dev restore 20260831_132441-bv-erpnext-database.sql.gz --with-public-files 20260831_132441-bv-erpnext-files.tar --with-private-files 20260831_132441-bv-erpnext-private-files.tar
File 20260831_132441-bv-erpnext-database.sql.gz not found. Trying to check in alternative directories.
File /home/peer/pilot/benches/bv-dev/20260831_132441-bv-erpnext-database.sql.gz found.
Enter mysql super user [root]:
MySQL root password:
App frappe already installed
bv-dev: SystemSettings.enable_scheduler is UNSET
*** Scheduler is disabled ***
Site bv-dev has been restored with files

```
which looks like a success.

But then accessing the bench fails with this error:
```Traceback (most recent call last):
File "/home/peer/pilot/benches/bv-dev/apps/frappe/frappe/utils/caching.py", line 65, in wrapper
return _cache[func][args_key]
~~~~~~~~~~~~^^^^^^^^^^
KeyError: ()

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/home/peer/pilot/benches/bv-dev/apps/frappe/frappe/website/serve.py", line 20, in get_response
return renderer_instance.render()
~~~~~~~~~~~~~~~~~~~~~~~~^^
File "/home/peer/pilot/benches/bv-dev/apps/frappe/frappe/website/page_renderers/template_page.py", line 84, in render
html = self.get_html()
File "/home/peer/pilot/benches/bv-dev/apps/frappe/frappe/website/utils.py", line 545, in cache_html_decorator
html = func(*args, **kwargs)
File "/home/peer/pilot/benches/bv-dev/apps/frappe/frappe/website/page_renderers/template_page.py", line 92, in get_html
self.init_context()
~~~~~~~~~~~~~~~~~^^
File "/home/peer/pilot/benches/bv-dev/apps/frappe/frappe/website/page_renderers/base_template_page.py", line 15, in init_context
self.context.update(get_website_settings())
~~~~~~~~~~~~~~~~~~~~^^
File "/home/peer/pilot/benches/bv-dev/apps/frappe/frappe/website/doctype/website_settings/website_settings.py", line 263, in get_website_settings
context.boot = get_boot_data()
~~~~~~~~~~~~~^^
File "/home/peer/pilot/benches/bv-dev/apps/frappe/frappe/website/utils.py", line 178, in get_boot_data
apps = get_apps()
File "/home/peer/pilot/benches/bv-dev/apps/frappe/frappe/utils/typing_validations.py", line 36, in wrapper
return func(*args, **kwargs)
File "/home/peer/pilot/benches/bv-dev/apps/frappe/frappe/utils/caching.py", line 71, in wrapper
return_val = func(*args, **kwargs)
File "/home/peer/pilot/benches/bv-dev/apps/frappe/frappe/apps.py", line 26, in get_apps
app not in get_setup_wizard_completed_apps()
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
File "/home/peer/pilot/benches/bv-dev/apps/frappe/frappe/core/doctype/installed_applications/installed_applications.py", line 159, in get_setup_wizard_completed_apps
return [a.app_name for a in apps.installed_applications if a.has_setup_wizard and a.is_setup_complete]
^^^^^^^^^^^^^^^^^^
AttributeError: 'InstalledApplication' object has no attribute 'has_setup_wizard'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/home/peer/pilot/benches/bv-dev/apps/frappe/frappe/utils/caching.py", line 65, in wrapper
return _cache[func][args_key]
~~~~~~~~~~~~^^^^^^^^^^
KeyError: ()

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/home/peer/pilot/benches/bv-dev/apps/frappe/frappe/app.py", line 139, in application
response = get_response()
File "/home/peer/pilot/benches/bv-dev/apps/frappe/frappe/website/serve.py", line 23, in get_response
return handle_exception(e, endpoint, path, http_status_code)
File "/home/peer/pilot/benches/bv-dev/apps/frappe/frappe/permissions.py", line 938, in wrapper
return fn(e, *args, **kwargs)
File "/home/peer/pilot/benches/bv-dev/apps/frappe/frappe/website/serve.py", line 37, in handle_exception
return ErrorPage(exception=e).render()
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
File "/home/peer/pilot/benches/bv-dev/apps/frappe/frappe/website/page_renderers/template_page.py", line 84, in render
html = self.get_html()
File "/home/peer/pilot/benches/bv-dev/apps/frappe/frappe/website/utils.py", line 545, in cache_html_decorator
html = func(*args, **kwargs)
File "/home/peer/pilot/benches/bv-dev/apps/frappe/frappe/website/page_renderers/template_page.py", line 92, in get_html
self.init_context()
~~~~~~~~~~~~~~~~~^^
File "/home/peer/pilot/benches/bv-dev/apps/frappe/frappe/website/page_renderers/error_page.py", line 17, in init_context
super().init_context()
~~~~~~~~~~~~~~~~~~~~^^
File "/home/peer/pilot/benches/bv-dev/apps/frappe/frappe/website/page_renderers/base_template_page.py", line 15, in init_context
self.context.update(get_website_settings())
~~~~~~~~~~~~~~~~~~~~^^
File "/home/peer/pilot/benches/bv-dev/apps/frappe/frappe/website/doctype/website_settings/website_settings.py", line 263, in get_website_settings
context.boot = get_boot_data()
~~~~~~~~~~~~~^^
File "/home/peer/pilot/benches/bv-dev/apps/frappe/frappe/website/utils.py", line 178, in get_boot_data
apps = get_apps()
File "/home/peer/pilot/benches/bv-dev/apps/frappe/frappe/utils/typing_validations.py", line 36, in wrapper
return func(*args, **kwargs)
File "/home/peer/pilot/benches/bv-dev/apps/frappe/frappe/utils/caching.py", line 71, in wrapper
return_val = func(*args, **kwargs)
File "/home/peer/pilot/benches/bv-dev/apps/frappe/frappe/apps.py", line 26, in get_apps
app not in get_setup_wizard_completed_apps()
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
File "/home/peer/pilot/benches/bv-dev/apps/frappe/frappe/core/doctype/installed_applications/installed_applications.py", line 159, in get_setup_wizard_completed_apps
return [a.app_name for a in apps.installed_applications if a.has_setup_wizard and a.is_setup_complete]
^^^^^^^^^^^^^^^^^^
AttributeError: 'InstalledApplication' object has no attribute 'has_setup_wizard'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/home/peer/pilot/benches/bv-dev/apps/frappe/frappe/utils/caching.py", line 65, in wrapper
return _cache[func][args_key]
~~~~~~~~~~~~^^^^^^^^^^
KeyError: ()

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/home/peer/pilot/benches/bv-dev/apps/frappe/frappe/middlewares.py", line 31, in __call__
return super().__call__(environ, patch_start_response)
~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/peer/pilot/benches/bv-dev/env/lib/python3.14/site-packages/werkzeug/middleware/shared_data.py", line 250, in __call__
return self.app(environ, start_response)
~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/peer/pilot/benches/bv-dev/env/lib/python3.14/site-packages/werkzeug/middleware/shared_data.py", line 250, in __call__
return self.app(environ, start_response)
~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/peer/pilot/benches/bv-dev/apps/frappe/frappe/app.py", line 84, in application
app(environ, start_response),
~~~^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/peer/pilot/benches/bv-dev/env/lib/python3.14/site-packages/werkzeug/wrappers/request.py", line 193, in application
resp = f(*args[:-2] + (request,))
File "/home/peer/pilot/benches/bv-dev/apps/frappe/frappe/app.py", line 145, in application
response = e.get_response(request.environ) if isinstance(e, HTTPException) else handle_exception(e)
~~~~~~~~~~~~~~~~^^^
File "/home/peer/pilot/benches/bv-dev/apps/frappe/frappe/permissions.py", line 938, in wrapper
return fn(e, *args, **kwargs)
File "/home/peer/pilot/benches/bv-dev/apps/frappe/frappe/app.py", line 405, in handle_exception
).render()
~~~~~~^^
File "/home/peer/pilot/benches/bv-dev/apps/frappe/frappe/website/page_renderers/template_page.py", line 84, in render
html = self.get_html()
File "/home/peer/pilot/benches/bv-dev/apps/frappe/frappe/website/utils.py", line 545, in cache_html_decorator
html = func(*args, **kwargs)
File "/home/peer/pilot/benches/bv-dev/apps/frappe/frappe/website/page_renderers/template_page.py", line 92, in get_html
self.init_context()
~~~~~~~~~~~~~~~~~^^
File "/home/peer/pilot/benches/bv-dev/apps/frappe/frappe/website/page_renderers/error_page.py", line 17, in init_context
super().init_context()
~~~~~~~~~~~~~~~~~~~~^^
File "/home/peer/pilot/benches/bv-dev/apps/frappe/frappe/website/page_renderers/base_template_page.py", line 15, in init_context
self.context.update(get_website_settings())
~~~~~~~~~~~~~~~~~~~~^^
File "/home/peer/pilot/benches/bv-dev/apps/frappe/frappe/website/doctype/website_settings/website_settings.py", line 263, in get_website_settings
context.boot = get_boot_data()
~~~~~~~~~~~~~^^
File "/home/peer/pilot/benches/bv-dev/apps/frappe/frappe/website/utils.py", line 178, in get_boot_data
apps = get_apps()
File "/home/peer/pilot/benches/bv-dev/apps/frappe/frappe/utils/typing_validations.py", line 36, in wrapper
return func(*args, **kwargs)
File "/home/peer/pilot/benches/bv-dev/apps/frappe/frappe/utils/caching.py", line 71, in wrapper
return_val = func(*args, **kwargs)
File "/home/peer/pilot/benches/bv-dev/apps/frappe/frappe/apps.py", line 26, in get_apps
app not in get_setup_wizard_completed_apps()
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
File "/home/peer/pilot/benches/bv-dev/apps/frappe/frappe/core/doctype/installed_applications/installed_applications.py", line 159, in get_setup_wizard_completed_apps
return [a.app_name for a in apps.installed_applications if a.has_setup_wizard and a.is_setup_complete]
^^^^^^^^^^^^^^^^^^
AttributeError: 'InstalledApplication' object has no attribute 'has_setup_wizard'
```

Which might be related to:
https://discuss.frappe.io/t/missing-column-in-installed-application-table-after-backup-restore/149180/2
mentioning the "has_setup_wizard column is not present in the tabInstalled Application" issue and refering to:
https://github.com/frappe/frappe/pull/33161
as a possible pointer to solve it.

Is a restore from a v15 backup not possible? Or only from a specific version range? Can this be solved manualle (e.g. by simply altering the table manually to add said column)?

Start with the restore command output and the failure in apps/frappe/frappe/core/doctype/installed_applications/installed_applications.py, especially get_setup_wizard_completed_apps. Compare the missing has_setup_wizard field with the linked Frappe PR #33161 and the referenced discussion. Done means establishing whether v15 backups are supported on v16 and identifying a verified restore or migration path.

Written by the indexing model from the issue text.