Redash V9 cant refresh schema


I just updated to v9 beta, and then there is an error when I refresh schema, showing a message that “schema refresh failed”. No matter it is mysql or postgresql.

I tried to downgrade to v8 and it looks fine, schema can be refreshed…may I know what is wrong? Or anyone has the same problem? Thanks.

What kind of database are you using?

Tried mysql & PostgreSQL, both have the same issue. Thanks.