If I try to select a date range other than today’s date, dashboard data is not loaded and it gives below error.
The same error I’m getting for Visitors -> Device if I add a new segment, no report is generated and It gives below error.
Error:
Oops… there was a problem during the request. Maybe the server had a temporary issue, or maybe you requested a report with too much data. Please try again. If this error occurs repeatedly please contact your Matomo administrator for assistance.
Segments can take quite long to be calculated. It seems like your server is returning a timeout before the result was ready to be served. Setting your Segment to “preProcess” could help here.