Why redash scheduled queries become outdated queries?

Any scheduled redash queries are become outdated queries and then moved into “Queries waiting” never got executed. redash version 2.0.1
Any idea?

Redash queries that are scheduled to run are going into the “outdated queries”.
Then these queries are moved into “Queries waiting” and never got executed.

The same query when executed directly are executed ok.
I am using redash version 2.0.1