Backend app request timeout exceeded

ERR.DS_API.REQUEST_TIMEOUT

Request processing timeout expired.

Possible causes:

• It takes too long to process the request on the data source side.
• It takes too long to prepare the request to the data source on the DataLens side.

To fix this error:

• Optimize the data in the source.
• Reduce the number of complex expressions with nested aggregations.
• Reduce the number of fields in a dataset.
• Create calculated fields at the dataset level instead of fields at the chart level.