"1146, "Table '50750f34cc.tabWebsite Settings' doesn't exist""

I’m using a fresh Bench + Frappe + ERPNext instance in a develop mode.
Every two minutes, there is scheduler log error with the following message:

Traceback (most recent call last):
File “/home/frappe/frappe-bench/apps/frappe/frappe/utils/background_jobs.py”, line 56, in execute_job
File “/home/frappe/frappe-bench/apps/frappe/frappe/model/utils/link_count.py”, line 32, in update_link_count
File “/home/frappe/frappe-bench/apps/frappe/frappe/database.py”, line 136, in sql
self._cursor.execute(query, values)
File “/home/frappe/frappe-bench/env/local/lib/python2.7/site-packages/MySQLdb/cursors.py”, line 205, in execute
self.errorhandler(self, exc, value)
File “/home/frappe/frappe-bench/env/local/lib/python2.7/site-packages/MySQLdb/connections.py”, line 36, in defaulterrorhandler
raise errorclass, errorvalue
ProgrammingError: (1146, “Table ‘50750f34cc.tabWebsite Settings’ doesn’t exist”)

I did the easy install on Ubuntu and I’m in develop mode.

How can I stop this error for coming?