After successful restore bench update throwing following error - sql syntax in v12 patch

Migrating demo
Executing frappe.patches.v12_0.move_timeline_links_to_dynamic_links in demo (_89e495e7941cf9e4)
Syntax error in query:

				INSERT INTO `tabDynamic Link`
					(`idx`, `name`, `parentfield`, `parenttype`, `parent`, `link_doctype`, `link_name`, `creation`,
					`modified`, `modified_by`)
				VALUES 
			
Traceback (most recent call last):
  File "/usr/lib/python3.5/runpy.py", line 184, in _run_module_as_main
    "__main__", mod_spec)
  File "/usr/lib/python3.5/runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "/home/kash/yumm/apps/frappe/frappe/utils/bench_helper.py", line 97, in <module>
    main()
  File "/home/kash/yumm/apps/frappe/frappe/utils/bench_helper.py", line 18, in main
    click.Group(commands=commands)(prog_name='bench')
  File "/home/kash/yumm/env/lib/python3.5/site-packages/click/core.py", line 764, in __call__
    return self.main(*args, **kwargs)
  File "/home/kash/yumm/env/lib/python3.5/site-packages/click/core.py", line 717, in main
    rv = self.invoke(ctx)
  File "/home/kash/yumm/env/lib/python3.5/site-packages/click/core.py", line 1137, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/home/kash/yumm/env/lib/python3.5/site-packages/click/core.py", line 1137, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/home/kash/yumm/env/lib/python3.5/site-packages/click/core.py", line 956, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/home/kash/yumm/env/lib/python3.5/site-packages/click/core.py", line 555, in invoke
    return callback(*args, **kwargs)
  File "/home/kash/yumm/env/lib/python3.5/site-packages/click/decorators.py", line 17, in new_func
    return f(get_current_context(), *args, **kwargs)
  File "/home/kash/yumm/apps/frappe/frappe/commands/__init__.py", line 25, in _func
    ret = f(frappe._dict(ctx.obj), *args, **kwargs)
  File "/home/kash/yumm/apps/frappe/frappe/commands/site.py", line 229, in migrate
    migrate(context.verbose, rebuild_website=rebuild_website)
  File "/home/kash/yumm/apps/frappe/frappe/migrate.py", line 48, in migrate
    frappe.modules.patch_handler.run_all()
  File "/home/kash/yumm/apps/frappe/frappe/modules/patch_handler.py", line 29, in run_all
    if not run_single(patchmodule = patch):
  File "/home/kash/yumm/apps/frappe/frappe/modules/patch_handler.py", line 63, in run_single
    return execute_patch(patchmodule, method, methodargs)
  File "/home/kash/yumm/apps/frappe/frappe/modules/patch_handler.py", line 83, in execute_patch
    frappe.get_attr(patchmodule.split()[0] + ".execute")()
  File "/home/kash/yumm/apps/frappe/frappe/patches/v12_0/move_timeline_links_to_dynamic_links.py", line 42, in execute
    """.format(", ".join([d for d in values])))
  File "/home/kash/yumm/apps/frappe/frappe/database/database.py", line 171, in sql
    self._cursor.execute(query)
  File "/home/kash/yumm/env/lib/python3.5/site-packages/pymysql/cursors.py", line 170, in execute
    result = self._query(query)
  File "/home/kash/yumm/env/lib/python3.5/site-packages/pymysql/cursors.py", line 328, in _query
    conn.query(q)
  File "/home/kash/yumm/env/lib/python3.5/site-packages/pymysql/connections.py", line 517, in query
    self._affected_rows = self._read_query_result(unbuffered=unbuffered)
  File "/home/kash/yumm/env/lib/python3.5/site-packages/pymysql/connections.py", line 732, in _read_query_result
    result.read()
  File "/home/kash/yumm/env/lib/python3.5/site-packages/pymysql/connections.py", line 1075, in read
    first_packet = self.connection._read_packet()
  File "/home/kash/yumm/env/lib/python3.5/site-packages/pymysql/connections.py", line 684, in _read_packet
    packet.check_error()
  File "/home/kash/yumm/env/lib/python3.5/site-packages/pymysql/protocol.py", line 220, in check_error
    err.raise_mysql_exception(self._data)
  File "/home/kash/yumm/env/lib/python3.5/site-packages/pymysql/err.py", line 109, in raise_mysql_exception
    raise errorclass(errno, errval)
pymysql.err.ProgrammingError: (1064, "You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near '' at line 4")

fixed.
thanks