We have an EPiserver Find 7.5 On-premise solution but the graphic visualization of the statistics don`t work. The same funcionality works great in the dev-enviroment, but there we have a dev-index, not on-premise. It`seems that the __stats index is empty and there is an error getting the values to visualize the statistics ( Error: Invalid value for attribute cy="NaN").  Anyone else with the same problem?