We keep getting intermittent failures on random datasets within our Power BI workspaces. This has been happening since we updated to the new February 2019 gateway. We were having some refresh failures previously due to the gateway timing out, so we thought that upgrading would resolve the issues. It appears to have exascerbated it.
The errors look like the below:
Last refresh failed: Sun Mar 10 2019 17:40:35 GMT-0400 (Eastern Daylight Time) Before the data import for Requests finished, its data source timed out. Double-check whether that data source can process import queries, and if it can, try again.