Hey @Kopi_Kond is this thread perhaps relevant to you? If so can you give it a like or reply so it gets more traction 
I have a similar situation with BigQuery. I can't set the timeout in retool but my queries are usually 30-60 seconds and I've no issues in the past. As of yesterday I get an gateway timeout error after 20 seconds. This seems to be an issue with retool cloud version 3.182.0, because when I roll back my app to a previous version that used 3.181.0 the issue does not occur.