Error running query: Repeat error message for the same query

Hi, I am using redash v6.0.0 with postgres and redis hosted on kubernetes.

I notice sometimes when I run a query, I get an error message because of postgres connection is terminated unexpectedly. But when postgres connection is back on and I re-run the query that failed before, I expect to get correct result but get the same error message as before. I am not familiar with the redash architecture. Is it a result of query result caching?

Thanks in advance.