POs can't save nor submit after update to v11 staging

I updated from v10.1.64 to v11.0.3-beta15 by doing in the following:
bench switch-to-branch staging frappe
bench switch-to-branch staging erpnext
bench setup requirements
bench migrate
bench restart

After I create and save a PO and add a second item, click Save button, it will not save and remains in the “Not Saved” state. No error is displayed.
When I open a PO that was not submitted and click submit it also does not transition to “To Receive and Bill” state and remains in the Draft state.

updated to v11.0.3-beta16 and then get the following error whenever opening an item

Traceback (most recent call last):
File “/home/frappe/frappe-bench/apps/frappe/frappe/app.py”, line 61, in application
response = frappe.handler.handle()
File “/home/frappe/frappe-bench/apps/frappe/frappe/handler.py”, line 21, in handle
data = execute_cmd(cmd)
File “/home/frappe/frappe-bench/apps/frappe/frappe/handler.py”, line 56, in execute_cmd
return frappe.call(method, **frappe.form_dict)
File “/home/frappe/frappe-bench/apps/frappe/frappe/init.py”, line 1007, in call
return fn(*args, **newargs)
File “/home/frappe/frappe-bench/apps/frappe/frappe/desk/notifications.py”, line 271, in get_open_count
filters=filters, limit=100, distinct=True, ignore_ifnull=True))
File “/home/frappe/frappe-bench/apps/frappe/frappe/init.py”, line 1262, in get_all
return get_list(doctype, *args, **kwargs)
File “/home/frappe/frappe-bench/apps/frappe/frappe/init.py”, line 1235, in get_list
return frappe.model.db_query.DatabaseQuery(doctype).execute(None, *args, **kwargs)
File “/home/frappe/frappe-bench/apps/frappe/frappe/model/db_query.py”, line 87, in execute
result = self.build_and_run()
File “/home/frappe/frappe-bench/apps/frappe/frappe/model/db_query.py”, line 111, in build_and_run
return frappe.db.sql(query, as_dict=not self.as_list, debug=self.debug, update=self.update)
File “/home/frappe/frappe-bench/apps/frappe/frappe/database.py”, line 210, in sql
self._cursor.execute(query)
File “/home/frappe/frappe-bench/env/local/lib/python2.7/site-packages/pymysql/cursors.py”, line 165, in execute
result = self._query(query)
File “/home/frappe/frappe-bench/env/local/lib/python2.7/site-packages/pymysql/cursors.py”, line 321, in _query
conn.query(q)
File “/home/frappe/frappe-bench/env/local/lib/python2.7/site-packages/pymysql/connections.py”, line 860, in query
self._affected_rows = self._read_query_result(unbuffered=unbuffered)
File “/home/frappe/frappe-bench/env/local/lib/python2.7/site-packages/pymysql/connections.py”, line 1061, in _read_query_result
result.read()
File “/home/frappe/frappe-bench/env/local/lib/python2.7/site-packages/pymysql/connections.py”, line 1349, in read
first_packet = self.connection._read_packet()
File “/home/frappe/frappe-bench/env/local/lib/python2.7/site-packages/pymysql/connections.py”, line 1018, in _read_packet
packet.check_error()
File “/home/frappe/frappe-bench/env/local/lib/python2.7/site-packages/pymysql/connections.py”, line 384, in check_error
err.raise_mysql_exception(self._data)
File “/home/frappe/frappe-bench/env/local/lib/python2.7/site-packages/pymysql/err.py”, line 107, in raise_mysql_exception
raise errorclass(errno, errval)
InternalError: (1054, u"Unknown column ‘tabPayment Entry.item_code’ in ‘where clause’")

Most likely your schema is not migrated. Please run bench update again and report any problems you have in migration.