HectorLira edited a comment on issue #5700: Error when trying to visualize 'Time Series - Line Chart' -- Error message is unclear URL: https://github.com/apache/incubator-superset/issues/5700#issuecomment-420003839 @pc042672 I was getting the same error when using the time series chart and selecting time grain. I was able to use time grain successfully by building the same query from SQL Lab and declaring a time zone for my time column. Here is an image of the final query Superset uses to graph and now I can use the time grain freely (even with filter boxes). The name of my time column is timestamp, this is why I have to use double quotes to reference the column. 
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