Migrating issue database from V6 to V8

I installed fresh new erpV8 on ubuntu V16.04
will restoring site i have following issues while migrating:

Executing erpnext.patches.v7_0.set_portal_settings in site1.local (1bd3e0294da19198)
/home/frappe/frappe-bench/apps/erpnext/erpnext/schools/doctype/assessment/assessment.json missing
Traceback (most recent call last):
File “/usr/lib/python2.7/runpy.py”, line 174, in _run_module_as_main
main”, fname, loader, pkg_name)
File “/usr/lib/python2.7/runpy.py”, line 72, in _run_code
exec code in run_globals
File “/home/frappe/frappe-bench/apps/frappe/frappe/utils/bench_helper.py”, line 91, in
main()
File “/home/frappe/frappe-bench/apps/frappe/frappe/utils/bench_helper.py”, line 17, in main
click.Group(commands=commands)(prog_name=‘bench’)
File “/home/frappe/frappe-bench/env/local/lib/python2.7/site-packages/click/core.py”, line 722, in call
return self.main(*args, **kwargs)
File “/home/frappe/frappe-bench/env/local/lib/python2.7/site-packages/click/core.py”, line 697, in main
rv = self.invoke(ctx)
File “/home/frappe/frappe-bench/env/local/lib/python2.7/site-packages/click/core.py”, line 1066, in invoke
return _process_result(sub_ctx.command.invoke(sub_ctx))
File “/home/frappe/frappe-bench/env/local/lib/python2.7/site-packages/click/core.py”, line 1066, in invoke
return _process_result(sub_ctx.command.invoke(sub_ctx))
File “/home/frappe/frappe-bench/env/local/lib/python2.7/site-packages/click/core.py”, line 895, in invoke
return ctx.invoke(self.callback, **ctx.params)
File “/home/frappe/frappe-bench/env/local/lib/python2.7/site-packages/click/core.py”, line 535, in invoke
return callback(*args, **kwargs)
File “/home/frappe/frappe-bench/env/local/lib/python2.7/site-packages/click/decorators.py”, line 17, in new_func
return f(get_current_context(), *args, **kwargs)
File “/home/frappe/frappe-bench/apps/frappe/frappe/commands/init.py”, line 24, in _func
ret = f(frappe._dict(ctx.obj), *args, **kwargs)
File “/home/frappe/frappe-bench/apps/frappe/frappe/commands/site.py”, line 216, in migrate
migrate(context.verbose, rebuild_website=rebuild_website)
File “/home/frappe/frappe-bench/apps/frappe/frappe/migrate.py”, line 31, in migrate
frappe.modules.patch_handler.run_all()
File “/home/frappe/frappe-bench/apps/frappe/frappe/modules/patch_handler.py”, line 29, in run_all
if not run_single(patchmodule = patch):
File “/home/frappe/frappe-bench/apps/frappe/frappe/modules/patch_handler.py”, line 63, in run_single
return execute_patch(patchmodule, method, methodargs)
File “/home/frappe/frappe-bench/apps/frappe/frappe/modules/patch_handler.py”, line 83, in execute_patch
frappe.get_attr(patchmodule.split()[0] + “.execute”)()
File “/home/frappe/frappe-bench/apps/erpnext/erpnext/patches/v7_0/set_portal_settings.py”, line 16, in execute
frappe.get_doc(‘Portal Settings’).sync_menu()
File “/home/frappe/frappe-bench/apps/frappe/frappe/website/doctype/portal_settings/portal_settings.py”, line 32, in sync_menu
frappe.get_doc({“doctype”: “Role”, “role_name”: item.get(‘role’), “desk_access”: 0}).insert()
File “/home/frappe/frappe-bench/apps/frappe/frappe/model/document.py”, line 182, in insert
self.set_defaults()
File “/home/frappe/frappe-bench/apps/frappe/frappe/model/document.py”, line 493, in set_defaults
new_doc = frappe.new_doc(self.doctype, as_dict=True)
File “/home/frappe/frappe-bench/apps/frappe/frappe/init.py”, line 595, in new_doc
return get_new_doc(doctype, parent_doc, parentfield, as_dict=as_dict)
File “/home/frappe/frappe-bench/apps/frappe/frappe/model/create_new.py”, line 19, in get_new_doc
frappe.local.new_doc_templates[doctype] = make_new_doc(doctype)
File “/home/frappe/frappe-bench/apps/frappe/frappe/model/create_new.py”, line 40, in make_new_doc
set_user_and_static_default_values(doc)
File “/home/frappe/frappe-bench/apps/frappe/frappe/model/create_new.py”, line 55, in set_user_and_static_default_values
user_default_value = get_user_default_value(df, defaults, user_permissions)
File “/home/frappe/frappe-bench/apps/frappe/frappe/model/create_new.py”, line 70, in get_user_default_value
if (frappe.get_meta(df.options).document_type==“Setup”
File “/home/frappe/frappe-bench/apps/frappe/frappe/init.py”, line 636, in get_meta
return frappe.model.meta.get_meta(doctype, cached=cached)
File “/home/frappe/frappe-bench/apps/frappe/frappe/model/meta.py”, line 33, in get_meta
lambda: Meta(doctype))
File “/home/frappe/frappe-bench/apps/frappe/frappe/utils/redis_wrapper.py”, line 173, in hget
value = generator()
File “/home/frappe/frappe-bench/apps/frappe/frappe/model/meta.py”, line 33, in
lambda: Meta(doctype))
File “/home/frappe/frappe-bench/apps/frappe/frappe/model/meta.py”, line 69, in init
super(Meta, self).init(“DocType”, doctype)
File “/home/frappe/frappe-bench/apps/frappe/frappe/model/document.py”, line 84, in init
self.load_from_db()
File “/home/frappe/frappe-bench/apps/frappe/frappe/model/meta.py”, line 74, in load_from_db
super(Meta, self).load_from_db()
File “/home/frappe/frappe-bench/apps/frappe/frappe/model/document.py”, line 115, in load_from_db
frappe.throw(
("{0} {1} not found").format(
(self.doctype), self.name), frappe.DoesNotExistError)
File “/home/frappe/frappe-bench/apps/frappe/frappe/init.py”, line 319, in throw
msgprint(msg, raise_exception=exc, title=title, indicator=‘red’)
File “/home/frappe/frappe-bench/apps/frappe/frappe/init.py”, line 309, in msgprint
_raise_exception()
File “/home/frappe/frappe-bench/apps/frappe/frappe/init.py”, line 282, in _raise_exception
raise raise_exception(encode(msg))
frappe.exceptions.DoesNotExistError: DocType Domain not found

For smooth migration, you should first migrate to v7 then v8

how do i do that… is it possible to downgrade from erp v8 to v7 ?? &&
frappe version ?

or its only erpnext to v7 will i able to migrate with no issues ?

@morethegr8,

Fixed the patched in develop branch please check https://github.com/frappe/erpnext/pull/9890

switched to develop branch

still getting following error:

Executing erpnext.patches.v7_1.repost_stock_for_deleted_bins_for_merging_items in site1.local (1bd3e0294da19198)
Traceback (most recent call last):
File “/usr/lib/python2.7/runpy.py”, line 174, in _run_module_as_main
main”, fname, loader, pkg_name)
File “/usr/lib/python2.7/runpy.py”, line 72, in _run_code
exec code in run_globals
File “/home/frappe/frappe-bench/apps/frappe/frappe/utils/bench_helper.py”, line 91, in
main()
File “/home/frappe/frappe-bench/apps/frappe/frappe/utils/bench_helper.py”, line 17, in main
click.Group(commands=commands)(prog_name=‘bench’)
File “/home/frappe/frappe-bench/env/local/lib/python2.7/site-packages/click/core.py”, line 722, in call
return self.main(*args, **kwargs)
File “/home/frappe/frappe-bench/env/local/lib/python2.7/site-packages/click/core.py”, line 697, in main
rv = self.invoke(ctx)
File “/home/frappe/frappe-bench/env/local/lib/python2.7/site-packages/click/core.py”, line 1066, in invoke
return _process_result(sub_ctx.command.invoke(sub_ctx))
File “/home/frappe/frappe-bench/env/local/lib/python2.7/site-packages/click/core.py”, line 1066, in invoke
return _process_result(sub_ctx.command.invoke(sub_ctx))
File “/home/frappe/frappe-bench/env/local/lib/python2.7/site-packages/click/core.py”, line 895, in invoke
return ctx.invoke(self.callback, **ctx.params)
File “/home/frappe/frappe-bench/env/local/lib/python2.7/site-packages/click/core.py”, line 535, in invoke
return callback(*args, **kwargs)
File “/home/frappe/frappe-bench/env/local/lib/python2.7/site-packages/click/decorators.py”, line 17, in new_func
return f(get_current_context(), *args, **kwargs)
File “/home/frappe/frappe-bench/apps/frappe/frappe/commands/init.py”, line 24, in _func
ret = f(frappe._dict(ctx.obj), *args, **kwargs)
File “/home/frappe/frappe-bench/apps/frappe/frappe/commands/site.py”, line 216, in migrate
migrate(context.verbose, rebuild_website=rebuild_website)
File “/home/frappe/frappe-bench/apps/frappe/frappe/migrate.py”, line 31, in migrate
frappe.modules.patch_handler.run_all()
File “/home/frappe/frappe-bench/apps/frappe/frappe/modules/patch_handler.py”, line 29, in run_all
if not run_single(patchmodule = patch):
File “/home/frappe/frappe-bench/apps/frappe/frappe/modules/patch_handler.py”, line 63, in run_single
return execute_patch(patchmodule, method, methodargs)
File “/home/frappe/frappe-bench/apps/frappe/frappe/modules/patch_handler.py”, line 83, in execute_patch
frappe.get_attr(patchmodule.split()[0] + “.execute”)()
File “/home/frappe/frappe-bench/apps/erpnext/erpnext/patches/v7_1/repost_stock_for_deleted_bins_for_merging_items.py”, line 36, in execute
.format(’, ‘.join([’%s’]*len(modified_items))), tuple(modified_items)))
File “/home/frappe/frappe-bench/apps/frappe/frappe/database.py”, line 142, in sql
self._cursor.execute(query, values)
File “/home/frappe/frappe-bench/env/local/lib/python2.7/site-packages/MySQLdb/cursors.py”, line 250, in execute
self.errorhandler(self, exc, value)
File “/home/frappe/frappe-bench/env/local/lib/python2.7/site-packages/MySQLdb/connections.py”, line 50, in defaulterrorhandler
raise errorvalue
_mysql_exceptions.OperationalError: (1054, “Unknown column ‘pr.source_warehouse’ in ‘field list’”)