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V12 - V11 Migration Error

v12

#1

Hello I installed V12 as production but I was getting errors on POS and Tax method is new so Thought of moving back to V11 but getting the following error.

01:~/frappe-bench$ bench switch-to-branch version-11 frappe erpnext
Switching for frappe
INFO:bench.utils:git config --unset-all remote.upstream.fetch
INFO:bench.utils:git config --add remote.upstream.fetch '+refs/heads/*:refs/remotes/upstream/*'
INFO:bench.utils:git fetch upstream 
INFO:bench.utils:git checkout version-11
Already on 'version-11'
Your branch is up to date with 'upstream/version-11'.
INFO:bench.utils:git merge upstream/version-11
Already up to date.
Switching for erpnext
INFO:bench.utils:git config --unset-all remote.upstream.fetch
INFO:bench.utils:git config --add remote.upstream.fetch '+refs/heads/*:refs/remotes/upstream/*'
INFO:bench.utils:git fetch upstream 
INFO:bench.utils:git checkout version-11
Already on 'version-11'
Your branch is up to date with 'upstream/version-11'.
INFO:bench.utils:git merge upstream/version-11
Already up to date.
Successfully switched branches for:
frappe
erpnext
Switched to version-11
Please run `bench update --patch` to be safe from any differences in database schema
psecrets@ubuntu-s-1vcpu-1gb-ams3-01:~/frappe-bench$ bench update --patch               Backing up sites...
Patching sites...
Migrating site1.local
Traceback (most recent call last):
  File "/usr/lib/python3.6/runpy.py", line 193, in _run_module_as_main
    "__main__", mod_spec)
  File "/usr/lib/python3.6/runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "/home/psecrets/frappe-bench/apps/frappe/frappe/utils/bench_helper.py", line 97, in <module>
    main()
  File "/home/psecrets/frappe-bench/apps/frappe/frappe/utils/bench_helper.py", line 18, in main
    click.Group(commands=commands)(prog_name='bench')
  File "/home/psecrets/frappe-bench/env/lib/python3.6/site-packages/click/core.py", line 764, in __call__
    return self.main(*args, **kwargs)
  File "/home/psecrets/frappe-bench/env/lib/python3.6/site-packages/click/core.py", line 717, in main
    rv = self.invoke(ctx)
  File "/home/psecrets/frappe-bench/env/lib/python3.6/site-packages/click/core.py", line 1137, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/home/psecrets/frappe-bench/env/lib/python3.6/site-packages/click/core.py", line 1137, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/home/psecrets/frappe-bench/env/lib/python3.6/site-packages/click/core.py", line 956, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/home/psecrets/frappe-bench/env/lib/python3.6/site-packages/click/core.py", line 555, in invoke
    return callback(*args, **kwargs)
  File "/home/psecrets/frappe-bench/env/lib/python3.6/site-packages/click/decorators.py", line 17, in new_func
    return f(get_current_context(), *args, **kwargs)
  File "/home/psecrets/frappe-bench/apps/frappe/frappe/commands/__init__.py", line 25, in _func
    ret = f(frappe._dict(ctx.obj), *args, **kwargs)
  File "/home/psecrets/frappe-bench/apps/frappe/frappe/commands/site.py", line 227, in migrate
    migrate(context.verbose, rebuild_website=rebuild_website)
  File "/home/psecrets/frappe-bench/apps/frappe/frappe/migrate.py", line 44, in migrate
    frappe.get_attr(fn)()
  File "/home/psecrets/frappe-bench/apps/frappe/frappe/patches/v11_0/sync_user_permission_doctype_before_migrate.py", line 6, in execute
    frappe.reload_doc('core', 'doctype', 'user_permission')
  File "/home/psecrets/frappe-bench/apps/frappe/frappe/__init__.py", line 799, in reload_doc
    return frappe.modules.reload_doc(module, dt, dn, force=force, reset_permissions=reset_permissions)
  File "/home/psecrets/frappe-bench/apps/frappe/frappe/modules/utils.py", line 160, in reload_doc
    return import_files(module, dt, dn, force=force, reset_permissions=reset_permissions)
  File "/home/psecrets/frappe-bench/apps/frappe/frappe/modules/import_file.py", line 26, in import_files
    reset_permissions=reset_permissions)
  File "/home/psecrets/frappe-bench/apps/frappe/frappe/modules/import_file.py", line 31, in import_file
    ret = import_file_by_path(path, force, pre_process=pre_process, reset_permissions=reset_permissions)
  File "/home/psecrets/frappe-bench/apps/frappe/frappe/modules/import_file.py", line 65, in import_file_by_path
    ignore_version=ignore_version, reset_permissions=reset_permissions)
  File "/home/psecrets/frappe-bench/apps/frappe/frappe/modules/import_file.py", line 132, in import_doc
    doc.insert()
  File "/home/psecrets/frappe-bench/apps/frappe/frappe/model/document.py", line 241, in insert
    d.db_insert()
  File "/home/psecrets/frappe-bench/apps/frappe/frappe/model/base_document.py", line 312, in db_insert
    ), list(d.values()))
  File "/home/psecrets/frappe-bench/apps/frappe/frappe/database.py", line 199, in sql
    self._cursor.execute(query, values)
  File "/home/psecrets/frappe-bench/env/lib/python3.6/site-packages/pymysql/cursors.py", line 170, in execute
    result = self._query(query)
  File "/home/psecrets/frappe-bench/env/lib/python3.6/site-packages/pymysql/cursors.py", line 328, in _query
    conn.query(q)
  File "/home/psecrets/frappe-bench/env/lib/python3.6/site-packages/pymysql/connections.py", line 517, in query
    self._affected_rows = self._read_query_result(unbuffered=unbuffered)
  File "/home/psecrets/frappe-bench/env/lib/python3.6/site-packages/pymysql/connections.py", line 732, in _read_query_result
    result.read()
  File "/home/psecrets/frappe-bench/env/lib/python3.6/site-packages/pymysql/connections.py", line 1075, in read
    first_packet = self.connection._read_packet()
  File "/home/psecrets/frappe-bench/env/lib/python3.6/site-packages/pymysql/connections.py", line 684, in _read_packet
    packet.check_error()
  File "/home/psecrets/frappe-bench/env/lib/python3.6/site-packages/pymysql/protocol.py", line 220, in check_error
    err.raise_mysql_exception(self._data)
  File "/home/psecrets/frappe-bench/env/lib/python3.6/site-packages/pymysql/err.py", line 109, in raise_mysql_exception
    raise errorclass(errno, errval)
pymysql.err.IntegrityError: (1048, "Column 'show_preview_popup' cannot be null")

#2

Tried this solution but it didnt help