Our company is using Redash version 3.0.0, a very old version From last 2 days we are not able to run any query on redash. Is 3.0.0 decommissioned?
It sounds like you’re probably running a self-hosted version of the Redash application, so the issue is likely to be in your environment and not related to anything Redash have done.
It’s not decommissioned. But it’s very old. As @griffinator76 mentioned, your environment probably changed.