Snowflake backend is down since 11:02am GMT+2. We're trying to fix it, post mortem will follow once we recover platform.
UPDATE:
Dead DWH was switched, everything is running on new backend. All running jobs, employing Snowflake backend, crashed. You have to run it again - everything will be OK for now. In case you're suffering under some other issues, contact us at support@keboola.com, please.
We'll also publish official post-mortem as soon as Snowflake guys resolve our Issue. Stay tuned and thanks for patience!
UPDATE II:
If you're experiencing errors in your personal sandboxes, reset your credentials under the "Sandbox" link on the right-top of Transformations (https://connection.keboola.com/admin/projects/$pid$/transformations/sandbox).